Untitled Flashcard Set

PART 1: ANATOMY, ORGANIZATION & BODY PLANES
1. Which level of organization includes all the other levels listed below?

A. Nucleus
B. Cell
C. Tissue
D. Organ
E. Organ system

2. A histologist primarily studies:

A. The entire human body
B. Tissues under a microscope
C. Body cavities
D. Organ systems during exercise
E. Diseases only

3. One difference between a gross anatomist and a histologist is:

A. One studies anatomy and the other studies physiology
B. One studies diseases and the other does not
C. A histologist uses a microscope to study tissues
D. A gross anatomist only studies cells
E. A histologist only studies bones

4. Which plane would best separate the two eyes?

A. Transverse
B. Horizontal
C. Sagittal
D. Frontal
E. Oblique

5. Which plane would allow you to examine the internal anatomy of both lungs with one cut?

A. Midsagittal
B. Oblique
C. Transverse
D. Coronal
E. Horizontal

6. Which abdominopelvic region overlaps with the left lower quadrant?

A. Right hypochondriac
B. Left hypochondriac
C. Left iliac
D. Right lumbar
E. Epigastric

7. The thoracic cavity contains the:

A. Liver and stomach
B. Heart and lungs
C. Kidneys and bladder
D. Small and large intestines
E. Liver and spleen

8. The peritoneal cavity is associated primarily with organs in the:

A. Cranial cavity
B. Vertebral cavity
C. Thoracic cavity
D. Abdominopelvic cavity
E. Pleural cavity

PART 2: BODY MEMBRANES
9. Which membrane lines the abdominal cavity and covers many abdominal organs?

A. Pleura
B. Pericardium
C. Peritoneum
D. Synovium
E. Mucosa

10. The visceral layer of a serous membrane is located:

A. Against the body wall
B. Directly against the organ
C. Inside the epidermis
D. Inside a joint
E. Inside a blood vessel

11. The parietal layer of a serous membrane is located:

A. Directly on the organ
B. Against the cavity wall
C. Inside the organ
D. Within cartilage
E. Inside the epidermis

12. A surgeon cutting through the peritoneum is most likely operating on the:

A. Lung
B. Liver
C. Brain
D. Heart
E. Two of the above

13. The lining of the nasal cavity is moist, contains mucus-producing cells, and rests on areolar tissue. What type of membrane is this?

A. Serous
B. Mucous
C. Cutaneous
D. Synovial
E. Fibrous

14. True or False: Synovial membranes line freely movable joints.

A. True
B. False

15. True or False: Serous membranes produce fluid that helps reduce friction between organs.

A. True
B. False

PART 3: THE FOUR PRIMARY TISSUES
16. Which of the following are the four primary tissue types?

A. Epithelial, connective, muscle, nervous
B. Bone, cartilage, muscle, blood
C. Epithelial, bone, blood, nervous
D. Muscle, cartilage, epithelial, blood
E. Nervous, skeletal, cardiac, smooth

17. Which tissue type covers body surfaces and lines internal organs?

A. Connective
B. Muscle
C. Epithelial
D. Nervous
E. Bone

18. Which tissue type is primarily responsible for contraction and movement?

A. Nervous
B. Epithelial
C. Connective
D. Muscle
E. Adipose

19. Which tissue type is specialized for communication and rapid signaling?

A. Muscle
B. Nervous
C. Epithelial
D. Connective
E. Cartilage

20. Which are the three categories of connective tissue?

A. Areolar, adipose, dense
B. Epithelial, muscle, neural
C. Proper, fluid, supporting
D. Glandular, endocrine, exocrine
E. Proper, cartilage, bone

21. Connective tissue generally consists of:

A. Only tightly packed cells
B. Cells and extracellular matrix
C. Only protein fibers
D. Only epithelial cells
E. Only blood vessels

22. True or False: Connective tissue generally has more extracellular matrix than epithelial tissue.

A. True
B. False

23. True or False: All connective tissues have exactly the same type of extracellular matrix.

A. True
B. False

PART 4: EPITHELIAL TISSUE
24. Which is NOT a major function of epithelial tissue?

A. Protection
B. Secretion
C. Sensation
D. Absorption
E. Storage

25. Which statement about epithelial tissue is FALSE?

A. Epithelial cells can divide
B. Epithelial tissue can cover body surfaces
C. Glandular cells are epithelial cells
D. Epithelial tissue is generally avascular
E. Epithelial cells cannot divide

26. Epithelial tissue is described as avascular because it:

A. Has no cells
B. Contains no blood vessels
C. Contains no nutrients
D. Cannot repair itself
E. Has no connective tissue underneath it

27. How do epithelial cells receive nutrients if epithelial tissue lacks blood vessels?

A. Through lymphatic vessels inside the epithelium
B. Through diffusion from underlying connective tissue
C. Through nerves
D. Through sweat glands
E. They do not receive nutrients

28. Simple epithelium contains:

A. One layer of cells
B. Two layers
C. Three layers
D. Many layers
E. No cells

29. Stratified epithelium contains:

A. One layer
B. Two or more layers
C. Only dead cells
D. Only glandular cells
E. Only connective tissue

30. Which epithelial tissue is rare and is found in ducts of sweat and mammary glands?

A. Simple squamous
B. Stratified cuboidal
C. Pseudostratified columnar
D. Simple columnar
E. Transitional

31. Which epithelium is best suited for rapid diffusion?

A. Simple squamous
B. Stratified squamous
C. Simple cuboidal
D. Stratified cuboidal
E. Transitional

32. Which epithelial tissue is commonly associated with secretion and absorption?

A. Simple cuboidal
B. Stratified squamous
C. Transitional
D. Stratified cuboidal
E. Keratinized stratified squamous

33. Which epithelial tissue commonly lines the digestive tract and can secrete digestive enzymes?

A. Simple squamous
B. Simple columnar
C. Stratified cuboidal
D. Transitional
E. Pseudostratified columnar

34. Transitional epithelium is found in the:

A. Skin
B. Stomach
C. Urinary bladder
D. Blood vessels
E. Trachea

35. Endothelium lines:

A. The skin
B. The urinary bladder
C. Blood vessels
D. The stomach
E. The trachea

36. True or False: Stratified epithelia are commonly found in areas subjected to mechanical or chemical stress.

A. True
B. False

37. True or False: Stratified epithelia are generally specialized primarily for rapid diffusion.

A. True
B. False

38. Epithelial cells adapted to move material along their apical surface usually have:

A. Microvilli
B. Cilia
C. Desmosomes
D. Centrioles
E. Flagella

39. Microvilli primarily:

A. Move mucus
B. Increase surface area for absorption
C. Connect neighboring cells
D. Produce melanin
E. Contract the cell

40. Cilia primarily:

A. Increase DNA production
B. Move substances across the cell surface
C. Store fat
D. Produce collagen
E. Attach cells to the basement membrane

41. True or False: Epithelial cells can regenerate through cell division.

A. True
B. False

PART 5: CELL JUNCTIONS
42. Which junction prevents substances from leaking between neighboring cells?

A. Gap junction
B. Tight junction
C. Hemidesmosome
D. Desmosome
E. CAM

43. Which junction allows neighboring cells to communicate directly?

A. Tight junction
B. Gap junction
C. Desmosome
D. Hemidesmosome
E. Adherens junction

44. Gap junctions contain membrane proteins called:

A. Keratins
B. Collagens
C. Connexons
D. Elastins
E. Integrins

45. Which junction provides strong mechanical attachment between cells?

A. Gap junction
B. Tight junction
C. Desmosome
D. Connexon
E. Cilium

46. A chemical damages the proteins between epithelial cells. The cells can still communicate, but substances begin leaking between them. Which junction was most likely damaged?

A. Hemidesmosome
B. Adherens junction
C. Gap junction
D. Tight junction
E. Desmosome

47. True or False: Gap junctions allow direct communication between adjacent cells.

A. True
B. False

PART 6: GLANDS & SECRETION
48. Which type of gland secretes products into ducts?

A. Endocrine
B. Exocrine
C. Neural
D. Paracrine
E. Synovial

49. Which type of gland releases hormones into the bloodstream?

A. Exocrine
B. Endocrine
C. Sebaceous
D. Merocrine
E. Apocrine

50. Which mode of secretion releases the product through exocytosis without destroying the cell?

A. Holocrine
B. Apocrine
C. Merocrine
D. Endocrine
E. Mucous

51. Which mode of secretion involves the loss of part of the cell?

A. Merocrine
B. Apocrine
C. Holocrine
D. Endocrine
E. Paracrine

52. Which mode of secretion involves destruction of the entire secretory cell?

A. Merocrine
B. Apocrine
C. Holocrine
D. Endocrine
E. Exocrine

53. Salivary glands primarily use which mode of secretion?

A. Holocrine
B. Apocrine
C. Merocrine
D. Endocrine
E. None

54. Which methods are involved in milk production by mammary glands?

A. Holocrine only
B. Merocrine only
C. Apocrine only
D. Merocrine and apocrine
E. Holocrine and merocrine

55. True or False: Sebaceous glands use holocrine secretion.

A. True
B. False

PART 7: CONNECTIVE TISSUE
56. Connective tissue fibers are produced by:

A. Macrophages
B. Fibroblasts
C. Adipocytes
D. Erythrocytes
E. Mast cells

57. Which protein fiber provides tensile strength?

A. Elastic fiber
B. Collagen fiber
C. Reticular fiber
D. Keratin
E. Elastin

58. Elastic fibers are primarily composed of:

A. Collagen
B. Elastin
C. Keratin
D. Actin
E. Myosin

59. Elastic fibers provide tissues with:

A. Rigidity only
B. Distensibility and elasticity
C. Mineral storage
D. Contractility
E. Blood production

60. If elastic fibers could still stretch but lost their elasticity, the tissue would:

A. Not stretch and not return
B. Stretch but not return to its original shape
C. Not stretch but return to its original shape
D. Stretch and return normally
E. Become completely rigid

61. Which connective tissue primarily stores triglycerides?

A. Cartilage
B. Reticular tissue
C. Blood
D. Adipose tissue
E. Bone

62. Reticular connective tissue forms an internal framework for:

A. Tendons
B. Liver, spleen, and lymph nodes
C. Epidermis
D. Bone shafts
E. Muscles

63. Which connective tissue has cells suspended in a fluid matrix?

A. Adipose
B. Blood
C. Dense regular
D. Cartilage
E. Bone

64. Lymph is classified as:

A. Epithelial tissue
B. Fluid connective tissue
C. Muscle tissue
D. Nervous tissue
E. Supporting connective tissue

65. Areolar tissue is classified as:

A. Connective tissue proper
B. Muscle tissue
C. Nervous tissue
D. Epithelial tissue
E. Fluid connective tissue

66. Fibrocartilage is characterized by:

A. No collagen fibers
B. A dense network of collagen fibers and relatively little ground substance
C. Many blood vessels
D. A large number of elastic fibers
E. A complete lack of cells

67. Ligaments:

A. Connect muscle to bone
B. Connect bone to bone
C. Are made of cartilage
D. Are always less flexible than tendons
E. Are epithelial tissues

68. Tendons:

A. Connect bone to bone
B. Connect skeletal muscle to bone
C. Connect organs to skin
D. Contain mostly elastic cartilage
E. Are fluid connective tissue

69. True or False: Ligaments are generally stretchier than tendons.

A. True
B. False

70. True or False: Bone heals faster than cartilage.

A. True
B. False

PART 8: CARTILAGE, BLOOD & LYMPH
71. Which type of cartilage is commonly found where strong support and resistance to compression are needed?

A. Elastic cartilage
B. Fibrocartilage
C. Hyaline cartilage
D. Reticular cartilage
E. Areolar cartilage

72. Which cartilage contains a dense network of collagen fibers?

A. Hyaline
B. Fibrocartilage
C. Elastic
D. Reticular
E. None

73. Which tissue contains cells suspended in a matrix containing dissolved proteins?

A. Bone
B. Areolar tissue
C. Lymph
D. A and C
E. All of the above

74. True or False: Blood is considered connective tissue.

A. True
B. False

75. True or False: Lymph is considered connective tissue.

A. True
B. False

PART 9: MUSCLE TISSUE
76. Muscle cells contain the contractile proteins:

A. Collagen and elastin
B. Actin and myosin
C. Keratin and collagen
D. Elastin and keratin
E. Tubulin and collagen

77. Which type of muscle is voluntary?

A. Smooth
B. Cardiac
C. Skeletal
D. Smooth and cardiac
E. All three

78. Which muscle tissues are striated?

A. Skeletal only
B. Cardiac only
C. Skeletal and cardiac
D. Smooth and cardiac
E. Smooth only

79. Which muscle tissue is involuntary and found in the walls of many organs?

A. Skeletal
B. Cardiac
C. Smooth
D. Dense regular
E. Nervous

80. Cardiac muscle cells are connected by:

A. Lacunae
B. Intercalated discs
C. Canaliculi
D. Osteons
E. Epidermal ridges

81. Intercalated discs contain:

A. Gap junctions and desmosomes
B. Osteocytes and osteoblasts
C. Collagen and elastin
D. Keratin and melanin
E. Cilia and microvilli

82. Regions where cardiac muscle cells are interconnected through specialized attachment sites are called:

A. Synovial membranes
B. Adhesion belts
C. Connexons
D. Intercalated discs
E. CAMs

83. True or False: Skeletal muscle cells can contain multiple nuclei.

A. True
B. False

84. True or False: All striated muscle is voluntary.

A. True
B. False

85. If skeletal muscle is replaced by dense irregular connective tissue after an injury, the muscle's ability to contract will:

A. Increase
B. Remain exactly the same
C. Decrease
D. Become involuntary
E. Become faster

PART 10: NERVOUS TISSUE
86. Nervous tissue is specialized for:

A. Contraction
B. Communication and electrical signaling
C. Fat storage
D. Protection only
E. Mineral storage

87. Nervous tissue is found:

A. Only in the brain
B. Only in the spinal cord
C. Only in nerves
D. In the brain, spinal cord, and peripheral nerves
E. Only in sensory organs

88. True or False: All nervous tissue is located in the brain and spinal cord.

A. True
B. False

PART 11: INTEGUMENTARY SYSTEM
89. The skin consists primarily of the:

A. Epidermis and hypodermis
B. Epidermis and dermis
C. Dermis and hypodermis
D. Epidermis, dermis, and hypodermis
E. Dermis only

90. Which layer of skin is superficial?

A. Dermis
B. Hypodermis
C. Epidermis
D. Fascia
E. Subcutaneous tissue

91. Which layer contains most of the skin's blood vessels?

A. Epidermis
B. Dermis
C. Stratum corneum
D. Stratum lucidum
E. Hypodermis only

92. The epidermis is primarily composed of:

A. Connective tissue
B. Nervous tissue
C. Epithelial tissue
D. Muscle tissue
E. Cartilage

93. Which epidermal layer contains the deepest epidermal cells and melanocytes?

A. Stratum corneum
B. Stratum lucidum
C. Stratum granulosum
D. Stratum spinosum
E. Stratum basale

94. The correct order of the major epidermal layers from deep to superficial is:

A. Corneum → granulosum → spinosum → basale
B. Basale → spinosum → granulosum → lucidum → corneum
C. Basale → granulosum → spinosum → corneum
D. Spinosum → basale → granulosum → corneum
E. Lucidum → basale → spinosum → corneum

95. A splinter on the palm nearly reaches the stratum basale. What is the final epidermal layer injured?

A. Stratum lucidum
B. Stratum granulosum
C. Stratum spinosum
D. Stratum corneum
E. Stratum basale

96. Which epidermal layer is composed primarily of dead, keratinized cells?

A. Stratum basale
B. Stratum spinosum
C. Stratum granulosum
D. Stratum corneum
E. Stratum lucidum

97. Dandruff is primarily composed of cells shed from the:

A. Stratum basale
B. Stratum corneum
C. Stratum lucidum
D. Stratum granulosum
E. Stratum spinosum

98. A first-degree burn affects:

A. Only the epidermis
B. The epidermis and entire dermis
C. The hypodermis only
D. Muscle tissue
E. Bone

99. A burn that destroys only superficial epidermal cells is classified as:

A. First-degree
B. Second-degree
C. Third-degree
D. Fourth-degree
E. Full-thickness

PART 12: DERMIS, BLOOD SUPPLY & SENSATION
100. Capillaries supplying the epidermis are located in the:

A. Epidermis
B. Hypodermis
C. Reticular dermis
D. Papillary dermis
E. Stratum corneum

101. Why are capillaries not located directly inside the epidermis?

A. The epidermis has no cells
B. The epidermis is avascular
C. Blood cannot enter the skin
D. The epidermis contains only connective tissue
E. The epidermis is too thick

102. Epidermal ridges:

A. Extend into the hypodermis
B. Increase friction and surface area
C. Are made of bone
D. Are produced by sweat glands
E. Prevent all skin movement

103. True or False: Epidermal ridges contribute to fingerprints.

A. True
B. False

104. True or False: Sanding away the fingertips permanently destroys fingerprints.

A. True
B. False

105. Tactile cells are located in the:

A. Stratum basale
B. Stratum corneum
C. Hypodermis
D. Stratum lucidum only
E. Reticular dermis

106. Tactile cells are important for:

A. Detecting touch
B. Producing collagen
C. Producing melanin
D. Producing sweat
E. Producing bone

PART 13: SKIN COLOR & MELANIN
107. Melanin is produced by:

A. Fibroblasts
B. Keratinocytes
C. Melanocytes
D. Osteocytes
E. Adipocytes

108. Exposure to sunlight can darken the skin because:

A. Melanocytes increase melanin production
B. Keratinocytes become muscle cells
C. Collagen changes into melanin
D. Blood vessels disappear
E. Sweat glands stop working

109. Albinism is associated with:

A. Excessive collagen
B. Lack of melanin
C. Excessive keratin
D. Increased blood supply
E. Excessive sebum

110. True or False: Individuals with different skin pigmentation generally have different numbers of melanocytes as the primary explanation for their skin color.

A. True
B. False

111. When a person becomes pale, the physiological basis is usually:

A. Increased blood flow to the skin
B. Increased melanin production
C. Decreased blood flow to the skin
D. Increased sweat production
E. Increased collagen production

112. During exercise, light skin may appear red because:

A. Melanocytes produce red pigment
B. Dermal blood vessels dilate
C. The epidermis becomes thicker
D. Sebaceous glands produce blood
E. The hypodermis contracts

113. True or False: Increased blood flow to the skin can cause the skin to appear red.

A. True
B. False

PART 14: SKIN GLANDS & ACCESSORY STRUCTURES
114. Acne is commonly associated with blockage of:

A. Eccrine sweat gland ducts
B. Sebaceous gland ducts
C. Mammary gland ducts
D. Ceruminous gland ducts
E. Salivary ducts

115. Deodorants are primarily used to mask the effects of secretions from:

A. Sebaceous glands
B. Mammary glands
C. Apocrine sweat glands
D. Eccrine sweat glands
E. Ceruminous glands

116. Apocrine sweat glands typically become active around:

A. Birth
B. Infancy
C. Puberty
D. Late adulthood
E. Menopause only

117. Apocrine gland secretions can become:

A. Sticky or cloudy and potentially odorous
B. Completely odorless forever
C. Mineralized
D. Blood-filled
E. Keratinized

118. Eccrine sweat glands are particularly important for:

A. Temperature regulation
B. Bone growth
C. Hair production
D. Melanin production
E. Blood cell production

119. True or False: Hair shafts and the nail body consist primarily of dead keratinized cells.

A. True
B. False

120. Which structure is primarily made of dead keratinized cells?

A. Hair shaft
B. Nail body
C. Stratum corneum
D. All of the above
E. None of the above

PART 15: FUNCTIONS OF THE INTEGUMENTARY SYSTEM
121. Which is an important function of the integumentary system?

A. Protection
B. Temperature regulation
C. Vitamin D synthesis
D. Sensation
E. All of the above

122. The skin protects against:

A. Infection
B. Dehydration
C. Chemicals
D. Physical injury
E. All of the above

123. The integumentary system contributes to vitamin D production through:

A. Exposure to ultraviolet radiation
B. Sweat secretion
C. Sebum secretion
D. Hair growth
E. Collagen production

124. Vitamin D3 is important because it promotes:

A. Sodium secretion
B. Calcium absorption
C. Melanin destruction
D. Sweat production
E. Collagen breakdown

125. The skin can lose water through:

A. Sweating
B. Bone resorption
C. Hair growth
D. Melanin production
E. Sebum storage

126. Increased subcutaneous fat can help:

A. Increase heat loss
B. Insulate the body core
C. Destroy vitamin D
D. Increase sweating
E. Reduce calcium absorption

127. Specialized mammary glands contribute to:

A. Digestion
B. Reproduction through milk production
C. Bone formation
D. Blood filtration
E. Nervous signaling

PART 16: WOUND HEALING & BURNS
128. Which event occurs first in wound healing?

A. Scar formation
B. Inflammatory response
C. Remodeling
D. Bone formation
E. Hair growth

129. Which process removes damaged cells and microorganisms during wound healing?

A. Phagocytosis
B. Ossification
C. Keratinization
D. Melanogenesis
E. Calcification

130. Which sequence best represents the wound-healing process described in your professor's questions?

A. Scab → inflammation → scar → phagocytosis
B. Inflammation → phagocytosis → scab → scar tissue
C. Scar → scab → inflammation → phagocytosis
D. Phagocytosis → scar → inflammation → scab
E. Inflammation → scar → scab → phagocytosis

131. Scar tissue is primarily associated with:

A. Normal muscle contraction
B. Replacement of damaged tissue with fibrous connective tissue
C. Increased melanin production
D. New cartilage formation only
E. Increased epidermal thickness

132. True or False: The permanent replacement of normal tissue with fibrous connective tissue can be called scar tissue.

A. True
B. False

133. True or False: Scar tissue contracts like normal skeletal muscle.

A. True
B. False

134. Severe third-degree burns can cause:

A. Dehydration
B. Infection
C. Electrolyte imbalance
D. Difficulty maintaining body temperature
E. All of the above

PART 17: AGING
135. Older adults may have more fragile skin because of:

A. Increased collagen production
B. Fewer collagen and elastic fibers
C. Increased melanocyte activity only
D. Increased blood supply
E. Increased epidermal thickness

136. Which change may contribute to decreased heat tolerance with aging?

A. Slower stem cell division
B. Reduced sebum secretion
C. Reduced dermal blood supply
D. Decline in vitamin D
E. All of the above

137. True or False: Aging can reduce the ability of the skin to regulate body temperature.

A. True
B. False

PART 18: SKELETAL SYSTEM
138. Which cells are responsible for building new bone?

A. Osteoclasts
B. Osteoblasts
C. Osteocytes
D. Chondrocytes
E. Fibroblasts

139. Which cells maintain mature bone tissue?

A. Osteoblasts
B. Osteoclasts
C. Osteocytes
D. Fibroblasts
E. Adipocytes

140. Which cells break down bone tissue?

A. Osteoblasts
B. Osteoclasts
C. Osteocytes
D. Chondrocytes
E. Fibrocytes

141. Osteoclast activity can:

A. Decrease blood calcium
B. Increase blood calcium
C. Stop bone remodeling
D. Produce cartilage
E. Produce melanin

142. The skeletal system helps maintain normal blood concentrations of:

A. Calcium and phosphate
B. Sodium and glucose only
C. Oxygen and carbon dioxide
D. Iron and melanin
E. Protein and fat

143. An epiphyseal line indicates:

A. Bone infection
B. Bone fracture
C. Epiphyseal growth has ended
D. The bone has no marrow
E. The bone is entirely cartilage

144. True or False: Osteoblasts are primarily responsible for bone resorption.

A. True
B. False

145. True or False: Osteoclasts are involved in bone resorption.

A. True
B. False

PART 19: COMPACT & SPONGY BONE
146. Compact bone contains:

A. Osteons
B. Trabeculae only
C. Lacunae only
D. Cartilage rings
E. Muscle fibers

147. Spongy bone contains:

A. Osteons only
B. Trabeculae
C. Intercalated discs
D. Epidermal ridges
E. Cilia

148. Osteocytes are found in spaces called:

A. Osteons
B. Lacunae
C. Trabeculae
D. Canaliculi
E. Periosteum

149. Canaliculi are important because they:

A. Store fat
B. Allow communication between bone cells
C. Produce cartilage
D. Destroy osteocytes
E. Form epidermis

150. Concentric lamellae are arranged around the:

A. Medullary cavity
B. Central canal
C. Periosteum
D. Epiphyseal line
E. Trabecula

151. The central canal of an osteon contains:

A. Blood vessels and nerves
B. Melanocytes
C. Adipocytes only
D. Cartilage cells
E. Sweat glands

152. True or False: Spongy bone is organized into trabeculae.

A. True
B. False

PART 20: BONE GROWTH & OSSIFICATION
153. Intramembranous ossification forms bones such as the:

A. Femur
B. Humerus
C. Mandible
D. Tibia
E. Fibula

154. Endochondral ossification involves:

A. Replacing a cartilage model with bone
B. Replacing bone with muscle
C. Replacing skin with cartilage
D. Producing only flat bones
E. Producing only skull bones

155. Which process is associated with bone formation?

A. Ossification
B. Phagocytosis
C. Keratinization
D. Melanogenesis
E. Secretion

156. Which cells become osteoblasts during bone formation?

A. Bone-resorbing cells
B. Osteogenic cells
C. Erythrocytes
D. Melanocytes
E. Adipocytes

157. Which cell type is responsible for creating a marrow cavity by removing bone?

A. Osteoblast
B. Osteocyte
C. Osteoclast
D. Fibroblast
E. Chondrocyte

158. Which sequence best matches the sequence described in your professor's review material for endochondral ossification?

A. Secondary center → primary center → cartilage calcification → marrow cavity → osteoblasts
B. Cartilage matrix calcification → perichondrial cells become osteoblasts → primary ossification center → osteoclasts create marrow cavity → secondary ossification centers
C. Marrow cavity → secondary center → cartilage formation → primary center
D. Osteoclasts → osteocytes → cartilage → primary center
E. Bone formation → cartilage formation → marrow cavity → secondary center

PART 21: BONE CLASSIFICATION
159. The tarsal bones are classified as:

A. Long bones
B. Short bones
C. Flat bones
D. Irregular bones
E. Sesamoid bones

160. The femur is classified as a:

A. Flat bone
B. Short bone
C. Long bone
D. Irregular bone
E. Sesamoid bone

161. The vertebrae are classified as:

A. Long bones
B. Short bones
C. Flat bones
D. Irregular bones
E. Sesamoid bones

162. True or False: Bone classification is based primarily on the shape of the bone.

A. True
B. False

PART 22: BONE DISEASE & MINERALS
163. Rickets is associated with deficiency of:

A. Vitamin A
B. Vitamin B12
C. Vitamin C
D. Vitamin D3
E. Vitamin K

164. Vitamin D is important for:

A. Calcium absorption
B. Melanin production
C. Muscle contraction only
D. Sweat production
E. Collagen destruction

165. If blood calcium levels fall, which cells can help increase blood calcium?

A. Osteoblasts
B. Osteoclasts
C. Osteocytes only
D. Fibroblasts
E. Keratinocytes

166. True or False: The skeleton serves as an important storage site for calcium and phosphate.

A. True
B. False

PART 23: HOMEOSTASIS
167. Homeostasis refers to:

A. Maintaining a relatively stable internal environment
B. Preventing all changes in the body
C. Increasing body temperature continuously
D. Stopping metabolism
E. Destroying damaged tissue

168. Negative feedback generally:

A. Increases the original stimulus
B. Reduces the original stimulus
C. Prevents receptors from working
D. Eliminates the control center
E. Has no effect on homeostasis

169. Calcitonin is released when blood calcium:

A. Decreases
B. Increases
C. Remains exactly constant
D. Reaches zero
E. Is unrelated to calcium

170. True or False: If calcitonin acts through negative feedback, it should decrease the original stimulus rather than increase it.

A. True
B. False

171. Blood glucose falls. The pancreas releases glucagon, causing the liver to release glucose. In this scenario, the liver is the:

A. Receptor
B. Stimulus
C. Effector
D. Control center
E. Feedback

172. In a homeostatic feedback loop, the receptor:

A. Detects a change
B. Carries out the response
C. Produces the final effect
D. Always produces hormones
E. Stores calcium

PART 24: INTEGRATED PHYSIOLOGY
173. The chemical reactions involved in oxygen absorption, transport, and cellular use are examples of:

A. Growth
B. Movement
C. Responsiveness
D. Reproduction
E. Metabolism

174. Which two body systems are most directly involved in supplying oxygen-rich blood to body tissues?

A. Digestive and skeletal
B. Respiratory and cardiovascular
C. Nervous and endocrine
D. Muscular and integumentary
E. Reproductive and urinary

175. The respiratory system is responsible primarily for:

A. Pumping blood
B. Gas exchange
C. Producing red blood cells
D. Digesting food
E. Producing antibodies

176. The cardiovascular system transports:

A. Blood and dissolved substances
B. Air only
C. Food only
D. Nerve impulses only
E. Urine only

PART 25: EMBRYONIC ORIGINS
177. Which germ layer gives rise to much of the nervous system?

A. Endoderm
B. Mesoderm
C. Ectoderm
D. Epidermis
E. Periosteum

178. Connective tissues primarily develop from:

A. Mesoderm
B. Ectoderm
C. Endoderm
D. Epidermis
E. Neural tissue

179. Which tissue type can develop from all three embryonic germ layers?

A. Muscle
B. Nervous
C. Connective
D. Epithelial
E. Bone

180. Which pairing is INCORRECT?

A. Nervous tissue → ectoderm
B. Connective tissue → mesoderm
C. Muscle tissue → endoderm
D. Epithelial tissue → potentially all three germ layers
E. None of the above

PART 26: RAPID-FIRE TRUE/FALSE
181. Epithelial tissue contains blood vessels.

A. True
B. False

182. Epithelial tissue can regenerate through cell division.

A. True
B. False

183. Gap junctions allow neighboring cells to communicate.

A. True
B. False

184. Tight junctions help prevent substances from leaking between cells.

A. True
B. False

185. Desmosomes provide strong attachment between cells.

A. True
B. False

186. Simple squamous epithelium is only one cell layer thick.

A. True
B. False

187. Transitional epithelium lines the urinary bladder.

A. True
B. False

188. Endothelium lines arteries.

A. True
B. False

189. Cilia increase the ability of epithelial cells to move material along their surface.

A. True
B. False

190. Microvilli primarily increase surface area.

A. True
B. False

191. Fibroblasts produce connective tissue fibers.

A. True
B. False

192. Adipose tissue stores primarily triglycerides.

A. True
B. False

193. Blood is a connective tissue.

A. True
B. False

194. Bone is a connective tissue.

A. True
B. False

195. Skeletal muscle is voluntary.

A. True
B. False

196. Cardiac muscle is voluntary.

A. True
B. False

197. Smooth muscle is voluntary.

A. True
B. False

198. Cardiac muscle contains intercalated discs.

A. True
B. False

199. Nervous tissue is found only in the brain.

A. True
B. False

200. The epidermis is vascular.

A. True
B. False

201. The dermis contains blood vessels.

A. True
B. False

202. Melanocytes produce melanin.

A. True
B. False

203. UV exposure can increase melanin production.

A. True
B. False

204. The stratum corneum contains dead keratinized cells.

A. True
B. False

205. The stratum basale is the deepest epidermal layer.

A. True
B. False

206. First-degree burns are full-thickness burns.

A. True
B. False

207. Sebaceous glands are associated with acne.

A. True
B. False

208. Apocrine glands become active around puberty.

A. True
B. False

209. Eccrine sweat glands contribute to temperature regulation.

A. True
B. False

210. Hair shafts are composed primarily of living cells.

A. True
B. False

211. Vitamin D helps the body absorb calcium.

A. True
B. False

212. The hypodermis is the same thing as the epidermis.

A. True
B. False

213. Osteoblasts build bone.

A. True
B. False

214. Osteoclasts break down bone.

A. True
B. False

215. Osteocytes maintain mature bone tissue.

A. True
B. False

216. Osteons are characteristic structural units of compact bone.

A. True
B. False

217. Trabeculae are found in spongy bone.

A. True
B. False

218. Canaliculi allow communication between osteocytes.

A. True
B. False

219. An epiphyseal line indicates that longitudinal bone growth has ended.

A. True
B. False

220. Rickets can be associated with vitamin D deficiency.

A. True
B. False

221. Osteoclast activity can increase blood calcium.

A. True
B. False

222. Negative feedback increases the original stimulus.

A. True
B. False

223. The liver can act as an effector during blood glucose regulation.

A. True
B. False

224. Metabolism includes the chemical reactions necessary for cellular life.

A. True
B. False

PART 27: APPLICATION QUESTIONS
225. A person has severely reduced synovial fluid in the knee. Why could this increase pain?

A. Synovial fluid normally lubricates the joint
B. Synovial fluid normally causes friction
C. Synovial fluid produces bone
D. Synovial fluid prevents muscle contraction
E. Synovial fluid produces cartilage

226. A person damages the epidermal ridges on their fingertips. What would most directly be affected?

A. Bone formation
B. Fingerprint patterns
C. Blood calcium
D. Muscle contraction
E. Vitamin D production

227. A patient has severe damage to the skin's protective barrier. Which problem becomes more likely?

A. Dehydration
B. Infection
C. Chemical injury
D. All of the above
E. None of the above

228. A patient has decreased melanin production. Which would be most directly affected?

A. Skin pigmentation
B. Bone length
C. Muscle contraction
D. Synovial fluid
E. Blood pressure

229. If an osteoclast becomes excessively active, what could happen?

A. Increased bone resorption
B. Increased epidermal thickness
C. Increased melanin
D. Increased muscle contraction
E. Decreased blood calcium

230. A person has damaged elastic fibers in the skin. Which property would be most affected?

A. Ability to stretch and return to original shape
B. Ability to produce blood
C. Ability to contract voluntarily
D. Ability to form osteons
E. Ability to produce neurons

231. If tight junctions between epithelial cells are damaged, the tissue may:

A. Become more permeable
B. Become more muscular
C. Produce more bone
D. Lose all gap junctions
E. Become nervous tissue

232. If gap junctions are damaged but tight junctions remain intact, the cells would have difficulty:

A. Preventing leakage
B. Communicating directly with each other
C. Producing collagen
D. Producing melanin
E. Producing keratin

233. A person suffers extensive third-degree burns. Which complication is most concerning?

A. Dehydration
B. Infection
C. Temperature regulation problems
D. Electrolyte imbalance
E. All of the above

234. If skeletal muscle is replaced by scar tissue, the primary problem is that scar tissue:

A. Cannot contract like normal skeletal muscle
B. Contracts more strongly
C. Produces more actin
D. Produces more myosin
E. Becomes cardiac muscle

235. A person has a deficiency in vitamin D. Which process would be most directly affected?

A. Calcium absorption
B. Melanin production
C. Sweat production
D. Cilia movement
E. Sebum secretion

PART 28: PROFESSOR-STYLE CHALLENGE QUESTIONS
236. Which statement BEST explains why the epidermis can repair itself relatively quickly?

A. It contains numerous blood vessels
B. Its cells are capable of division
C. It contains osteoblasts
D. It contains skeletal muscle
E. It is composed entirely of dead cells

237. Which combination is correctly matched?

A. Osteoblast → bone resorption
B. Osteoclast → bone formation
C. Osteocyte → mature bone maintenance
D. Fibroblast → melanin production
E. Melanocyte → collagen production

238. Which combination is correctly matched?

A. Tight junction → direct cell communication
B. Gap junction → prevents all leakage
C. Desmosome → strong cell attachment
D. Hemidesmosome → produces melanin
E. Cilia → connects cells

239. Which combination is correctly matched?

A. Sebaceous gland → sebum
B. Eccrine gland → milk
C. Mammary gland → sweat
D. Apocrine gland → bone matrix
E. Ceruminous gland → melanin

240. Which combination is correctly matched?

A. Simple squamous → many layers
B. Stratified squamous → one layer
C. Transitional → urinary bladder
D. Simple columnar → epidermis
E. Stratified cuboidal → alveoli

241. Which combination is correctly matched?

A. Compact bone → trabeculae only
B. Spongy bone → osteons only
C. Compact bone → osteons
D. Spongy bone → no osteocytes
E. Bone → no extracellular matrix

242. Which combination is correctly matched?

A. Tarsals → short bones
B. Femur → flat bone
C. Vertebra → long bone
D. Sternum → short bone
E. Carpals → irregular bones

243. Which combination is correctly matched?

A. Ectoderm → nervous tissue
B. Mesoderm → nervous tissue only
C. Endoderm → bone
D. Ectoderm → blood
E. Mesoderm → epidermis only

244. Which statement about skin pigmentation is most consistent with the material?

A. Melanocytes produce melanin
B. UV exposure always decreases melanin production
C. Melanin is produced by fibroblasts
D. Albinism results from excessive melanin
E. Skin color has nothing to do with melanin

245. Which statement about aging is consistent with the material?

A. Aging always increases dermal blood supply
B. Aging can decrease collagen and elastic fibers
C. Aging increases skin elasticity
D. Aging increases sebum production
E. Aging eliminates the need for vitamin D

PART 29: FINAL MIXED REVIEW
246. Which tissue has cells suspended in an extracellular matrix?

A. Connective
B. Muscle only
C. Nervous only
D. Epithelial only
E. None

247. Which tissue has the primary function of covering surfaces and lining cavities?

A. Connective
B. Epithelial
C. Muscle
D. Nervous
E. Bone

248. Which tissue is responsible for generating force through contraction?

A. Epithelial
B. Connective
C. Muscle
D. Nervous
E. Adipose

249. Which tissue is specialized for rapid communication?

A. Muscle
B. Nervous
C. Connective
D. Epithelial
E. Cartilage

250. True or False: The three categories of connective tissue are connective tissue proper, fluid connective tissue, and supporting connective tissue.

A. True
B. False

251. True or False: The three categories of connective tissue are epithelial, muscle, and nervous tissue.

A. True
B. False

252. Which structure contains osteocytes?

A. Lacunae
B. Epidermal ridges
C. Intercalated discs
D. Tight junctions
E. Sebaceous glands

253. Which structure allows materials to pass directly between adjacent cells?

A. Tight junction
B. Gap junction
C. Desmosome
D. Hemidesmosome
E. Basement membrane

254. Which structure primarily prevents material from passing between adjacent epithelial cells?

A. Gap junction
B. Tight junction
C. Cilium
D. Microvillus
E. Connexon

255. Which skin layer is directly exposed to the outside environment?

A. Hypodermis
B. Dermis
C. Epidermis
D. Subcutaneous fascia
E. Reticular layer

256. Which skin layer contains the papillary and reticular layers?

A. Epidermis
B. Dermis
C. Hypodermis
D. Stratum corneum
E. Stratum basale

257. Which structure is responsible for producing melanin?

A. Fibroblast
B. Melanocyte
C. Osteocyte
D. Keratin
E. Adipocyte

258. Which structure is responsible for producing collagen fibers in connective tissue?

A. Fibroblast
B. Osteoclast
C. Melanocyte
D. Keratinocyte
E. Erythrocyte

259. Which structure is responsible for breaking down bone?

A. Osteoblast
B. Osteocyte
C. Osteoclast
D. Fibroblast
E. Chondrocyte

260. Which structure is responsible for building bone?

A. Osteoblast
B. Osteoclast
C. Osteocyte
D. Fibroblast
E. Adipocyte

261. True or False: Negative feedback is important for maintaining homeostasis.

A. True
B. False

262. True or False: A stimulus is a change that can be detected by a receptor.

A. True
B. False

263. True or False: An effector carries out the response in a homeostatic feedback loop.

A. True
B. False

264. Which two systems work together most directly to bring oxygen into the body and distribute it through the blood?

A. Digestive and urinary
B. Respiratory and cardiovascular
C. Nervous and skeletal
D. Integumentary and reproductive
E. Muscular and endocrine

265. Which of the following best summarizes the overall goal of homeostasis?

A. Eliminate all changes in the body
B. Maintain a relatively stable internal environment
C. Increase metabolism continuously
D. Prevent the body from responding to stimuli
E. Stop negative feedback