Ch6 - Integumentary System Practice Questions

What are the epidermis layer from outer to inner layer?

stratum corneum

stratum lucidum

stratum granulosum

stratum spinosum

stratum basale

The skin is one of the largest organs by weight in the body. T or F?

True

The tough waterproof layer that makes up the outermost part of the epidermis is the stratum lucidum? T or F?

False

Blood carrying excessive amounts of oxygen causes the skin tone called cyanosis. T or F?

False

The outermost layer of the epidermis is the stratum basale and the innermost layer is the stratum corneum. T or F

False

Melanocytes synthesize melanin, which protects underlying cells from the effects of ultraviolet light. T or F

True

Sunlight, ultraviolet light, and X-rays all darken skin because they increase blood flow to the dermis. T or F

False

Melanin production is greater in the skin of people who spend most of their time outdoors than in people who do not. T or F

True

A second-degree burn is the same as a full-thickness burn. T or F

False

A burn that involves the only the epidermis is called a deep partial-thickness burn. T or F

False

The stratum granulosum is superficial to the stratum spinosum. T or F

True

The skin, as an organ, is also referred to as the__________.

A) epidermis

B) cutaneous membrane

C) stratum corneum

D) epithelium

B) cutaneous membrane

The skin along with structures such as nails, hair, and sweat glands are part of

the__________.

A) integumentary system

B) dermis

C) subcutaneous tissue

D) exoskeleton

A) integumentary system

Injections that are administered into the tissues of the skin are called__________ injections.

A) subcutaneous

B) intradermal

C) intramuscular

D) hypodermic

B) intradermal

Nerve fibers scattered throughout the dermis are associated with what structures?

A) Hair, melanocytes, and keratinocytes

B) Bone, tendons, and muscles

C) Adipose and reticular tissue

D) Muscles, glands, and sensory receptor

D) Muscles, glands, and sensory receptor

What are dermal papillae?

A) Bundles of dense connective tissue fibers.

B) Cluster of cells that produce hair.

C) Site where nails are anchored to fingers or toes.

D) Projections of dermal tissue between epidermal ridges

D) Projections of dermal tissue between epidermal ridges

The__________ is typically thicker than the__________.

A) stratum basale; stratum corneum

B) papillary layer; reticular layer

C) dermis; epidermis

D) skin of the forearm; skin of the palm of the hand

C) dermis; epidermis

Normally, melanin is confined to what area of the skin?

A) Epidermis

B) Basement membrane

C) Dermal papillae

D) Stratum corneum

A) Epidermis

Why does exposure to ultraviolet light darken the skin?

A) It stimulates the synthesis of melanin.

B) It stimulates the production of keratinocytes.

C) It stimulates the synthesis of keratin.

D) It stimulates proliferation of papillae

A) It stimulates the synthesis of melanin.

What epidermal layer consists of a single layer of columnar cells that undergo mitosis?

A) Stratum corneum

B) Stratum granulosum

C) Stratum spinosum

D) Stratum basale

D) Stratum basale

What determines the color of skin?

A) The number of melanocytes in the epidermis.

B) The thickness of the epidermis.

C) The amount of melanin that melanocytes produce.

D) The density of hair

C) The amount of melanin that melanocytes produce.

The subcutaneous layer is comprised of what tissue type(s)?

A) Epithelial tissue

B) Areolar and adipose tissue

C) Epithelial tissue and areolar tissue

D) Adipose tissue and skeletal muscle tissu

B) Areolar and adipose tissue

Skin cells play an important role in producing what vitamin?

A) Vitamin A

B) Vitamin B

C) Vitamin D

D) Vitamin K

C) Vitamin D

Epidermis is composed of__________, whereas dermis is composed of__________.

A) areolar tissue; columnar epithelial tissue

B) dense irregular connective tissue; simple squamous epithelial tissue

C) pseudostratified epithelial tissue; areolar tissue

D) stratified squamous epithelial tissue; dense irregular connective tissue

D) stratified squamous epithelial tissue; dense irregular connective tissue

What is the cause of cyanosis?

A) A buildup of cyanide in the skin

B) Low blood oxygen levels

C) Excess of carotene in the diet

D) Excessive exposure to ultraviolet (UV) radiatio

B) Low blood oxygen levels

Name the tough fibrous protein that is responsible for the waterproof nature of skin.

A) Keratin

B) Melanin

C) Vitamin D

D) Collagen

A) Keratin

What cell type produces the nail plates?

A) Cartilage cells (chondrocytes)

B) Fibroblasts

C) Melanocytes

D) Specialized epithelial cells

D) Specialized epithelial cells

The nail__________ overlies the nail__________.

A) plate; bed

B) plate; body

C) matrix; bed

D) bed; plate

A) plate; bed

What gives a nail its hardness?

A) Melanin

B) Collagen

C) Calcium

D) Keratin

D) Keratin

What forms the shafts of hair?

A) Live dermal cells

B) Dead epidermal cells

C) Live epidermal cells

D) Dead dermal cells

B) Dead epidermal cells

Arrector pili muscles are attached to what feature of the skin?

A) Nail beds

B) Sebaceous glands

C) Stratum corneum

D) Hair follicles

D) Hair follicles

What is secreted by sebaceous glands?

A) Fat globules mixed with cellular debris

B) Hormones

C) Watery solution containing organic material

D) Mucus

A) Fat globules mixed with cellular debris

What type of glands secrete breast milk and ear wax?

A) Modified sebaceous glands

B) Modified apocrine sweat glands

C) Modified merocrine (eccrine) sweat glands

D) Modified endocrine glands

B) Modified apocrine sweat glands

What is the primary means of body heat loss?

A) Conduction

B) Convection

C) Evaporation

D) Radiation

D) Radiation

What is a normal response to excessive loss of body heat in a cold environment?

A) Dermal blood vessels constrict.

B) Sweat glands become active.

C) Smooth muscles relax.

D) Dermal blood vessels dilate

A) Dermal blood vessels constrict.

Sweating results in loss of body heat by what means?

A) Convection

B) Conduction

C) Evaporation

D) Radiation

C) Evaporation

The body loses heat to the air molecules continuously circulating over it by the process

of__________.

A) Radiation

B) Evaporation

C) Conduction

D) Convection

D) Convection

A core body temperature that drops below 35ºC (95ºF) is called__________.

A) hyperthermia

B) fever

C) hypothermia

D) alopecia

C) hypothermia

Inflammation results in__________ in the area of injury or infection, resulting in redness and

swelling of the tissue.

A) vasodilation

B) muscle contraction

C) blood clotting

D) loss of skin

A) vasodilation

When does inflammation occur?

A) In response to extreme cold

B) In response to injury or infection

C) In response to fever

D) In response to aging

B) In response to injury or infection

In treating a burn patient, how is the "rule of nines" used?

A) To estimate the depth of the burn.

B) To estimate the surface area of the burn.

C) To estimate time needed for healing.

D) To estimate the level of pain experienced by the patien

B) To estimate the surface area of the burn.

As a person ages, what happens to their skin?

A) The skin becomes thicker.

B) The skin becomes more opaque.

C) The skin becomes more elastic.

D) The skin becomes thinner

D) The skin becomes thinner

What feature of the skin is involved in acne?

A) Sweat glands

B) Hair follicles

C) Sebaceous glands

D) Apocrine glands

C) Sebaceous glands

The condition called__________ results from a complete lack of melanin.

A) albinism

B) jaundice

C) cyanosis

D) melanoma

A) albinism

The deepest cells of the epidermis are those of the stratum__________

stratum basale

The pigment produced by melanocytes is__________

melanin

he__________ of the subcutaneous layer acts as a heat insulato

adipose tissue