A&P I (Lecture) Exam #2 || Chapter 6

Which function of the skeletal system would be especially important if you were in a car accident?

1. storage of minerals

2. protection of internal organs

3. facilitation of movement

4. fat storage

protection of internal organs

Bone tissue can be described as ________.

1. dead calcified tissue

2. cartilage

3. the skeletal system

4. dense, hard connective tissue

dense, hard connective tissue

Without red marrow, bones would not be able to ________.

1. store phosphate

2. store calcium

3. make blood cells

4. move like levers

make blood cells

Yellow marrow has been identified as ________.

1. an area of fat storage

2. a point of attachment for muscles

3. the hard portion of bone

4. the cause of kyphosis

an area of fat storage

Which of the following can be found in areas of movement?

1. hematopoiesis

2. cartilage

3. yellow marrow

4. red marrow

cartilage

The skeletal system is made of ________.

1. muscles and tendons

2. bones and cartilage

3. vitreous humor

4. minerals and fat

bones and cartilage

Most of the bones of the arms and hands are long bones; however, the bones in the wrist are categorized as ________.

1. flat bones

2. short bones

3. sesamoid bones

4. irregular bones

short bones

Sesamoid bones are found embedded in ________.

1. joints

2. muscles

3. ligaments

4. tendons

tendons

Bones that surround the spinal cord are classified as ________ bones.

1. irregular

2. sesamoid

3. flat

4. short

irregular

Which category of bone is among the most numerous in the skeleton?

1. long bone

2. sesamoid bone

3. short bone

4. flat bone

flat bone

Long bones enable body movement by acting as a ________.

1. counterweight

2. resistive force

3. lever

4. fulcrum

lever

Which of the following occurs in the spongy bone of the epiphysis?

1. bone growth

2. bone remodeling

3. hematopoiesis

4. shock absorption

hematopoiesis

The diaphysis contains ________.

1. the metaphysis

2. fat stores

3. spongy bone

4. compact bone

compact bone

The fibrous membrane covering the outer surface of the bone is the ________.

1. periosteum

2. epiphysis

3. endosteum

4. diaphysis

periosteum

Which of the following are incapable of undergoing mitosis?

1. osteoblasts and osteoclasts

2. osteocytes and osteoclasts

3. osteoblasts and osteocytes

4. osteogenic cells and osteoclasts

osteocytes and osteoclasts

Which cells do not originate from osteogenic cells?

1. osteoblasts

2. osteoclasts

3. osteocytes

4. osteoprogenitor cells

osteoclasts

Which of the following are found in compact bone and cancellous bone?

1. Haversian systems

2. Haversian canals

3. lamellae

4. lacunae

lacunae

Which of the following are only found in cancellous bone?

1. canaliculi

2. Volkmann’s canals

3. trabeculae

4. calcium salts

trabeculae

The area of a bone where the nutrient foramen passes forms what kind of bone marking?

1. a hole

2. a facet

3. a canal

4. a fissure

a canal

Why is cartilage slow to heal?

1. because it eventually develops into bone

2. because it is semi-solid and flexible

3. because it does not have a blood supply

4. because endochondral ossification replaces all cartilage with bone

because it does not have a blood supply

Why are osteocytes spread out in bone tissue?

1. They develop from mesenchymal cells.

2. They are surrounded by osteoid.

3. They travel through the capillaries.

4. Formation of osteoid spreads out the osteoblasts that formed the ossification centers.

they are surrounded by osteoid

In endochondral ossification, what happens to the chondrocytes?

1. They develop into osteocytes.

2. They die in the calcified matrix that surrounds them and form the medullary cavity.

3. They grow and form the periosteum.

4. They group together to form the primary ossification center.

they die in the calcified matrix that surrounds them and form the medullary cavity.

Which of the following bones is (are) formed by intramembranous ossification?

1. the metatarsals

2. the femur

3. the ribs

4. the flat bones of the cranium

the flat bones of the cranium.

Bones grow in length due to activity in the ________.

1. epiphyseal plate

2. perichondrium

3. periosteum

4. medullary cavity

epiphyseal plate

Bones grow in diameter due to bone formation ________.

1. in the medullary cavity

2. beneath the periosteum

3. in the epiphyseal plate

4. within the metaphysis

beneath the periosteum

Which of the following represents the correct sequence of zones in the epiphyseal plate?

1. proliferation, reserved, maturation, calcification

2. maturation, proliferation, reserved, calcification

3. calcification, maturation, proliferation, reserved

4. calcification, reserved, proliferation, maturation

proliferation, maturation, calcification, reserved

A fracture can be both ________.

1. open and closed

2. open and transverse

3. transverse and greenstick

4. greenstick and comminuted

open and closed

How can a fractured diaphysis release fat globules into the bloodstream?

1. The bone pierces fat stores in the skin.

2. The yellow marrow in the diaphysis is exposed and damaged.

3. The injury triggers the body to release fat from healthy bones.

4. The red marrow in the fractured bone releases fat to heal the fracture.

The yellow marrow in the diaphysis is exposed and damaged

In a compound fracture, ________.

1. the break occurs at an angle to the bone

2. the broken bone does not tear the skin

3. one fragment of broken bone is compressed into the other

4. broken bone pierces the skin

broken bone pierces the skin

The internal and external calli are replaced by ________.

1. hyaline cartilage

2. trabecular bone

3. osteogenic cells

4. osteoclasts

trabecular bone

The first type of bone to form during fracture repair is ________ bone.

1. compact

2. lamellar

3. spongy

4. dense

spongy bone

Wolff’s law, which describes the effect of mechanical forces in bone modeling/remodeling, would predict that ________

1. a right-handed pitcher will have thicker bones in his right arm compared to his left.

2. a right-handed cyclist will have thicker bones in her right leg compared to her left.

3. a broken bone will heal thicker than it was before the fracture.

4. a bed-ridden patient will have thicker bones than an athlete.

a right-handed pitcher will have thicker bones in his right arm compared to his left.

Calcium cannot be absorbed from the small intestine if ________ is lacking.

1. vitamin D

2. vitamin K

3. calcitonin

4. fluoride

Vitamin D

Which one of the following foods is best for bone health?

1. carrots

2. liver

3. leafy green vegetables

4. oranges

leafy green vegetables

Which of the following hormones are responsible for the adolescent growth spurt?

estrogen and testosterone

calcitonin and calcitriol

growth hormone and parathyroid hormone

thyroxine and progesterone

estrogen and testosterone

With respect to their direct effects on osseous tissue, which pair of hormones has actions that oppose each other?

1. estrogen and testosterone

2. calcitonin and calcitriol

3. estrogen and progesterone

4. calcitonin and parathyroid hormone

calcitonin and parathyroid hormone

When calcium levels are too high or too low, which body system is primarily affected?

1. skeletal system

2. endocrine system

3. digestive system

4. nervous system

nervous system

All of the following play a role in calcium homeostasis except

1. thyroxine

2. calcitonin

3. parathyroid hormone

4. vitamin D

thyroxine

Which of the following is most likely to be released when blood calcium levels are elevated?

1. thyroxine

2. calcitonin

3. parathyroid hormone

4. vitamin D

calcitonin