$$\text{Bone Mass} = \text{Osteoblast Activity} - \text{Osteoclast Activity}$$

Question 1

Which of the following is NOT a major function of the skeletal system?

Accepted Answer

Regulation of body temperature

Question 2

A patient presents with a fracture in the patella. Based on bone classification by shape, the patella is best described as which type of bone?

Accepted Answer

Sesamoid bone

Question 3

Which bone cell type is responsible for breaking down bone matrix during bone remodeling?

Accepted Answer

Osteoclast

Question 4

During endochondral ossification, what is the correct sequence of events?

Accepted Answer

Chondrocytes enlarge and die, blood vessels invade, osteoblasts form spongy bone, marrow cavity forms

Question 5

Which of the following best describes the composition of the bone matrix?

Accepted Answer

Calcium phosphate crystals and collagen fibers

Question 6

A long bone is fractured at the diaphysis. Which region of the bone is affected?

Accepted Answer

The shaft of the bone

Question 7

Which of the following statements about compact bone is TRUE?

Accepted Answer

It contains parallel osteons and provides strength to resist stress.

Question 8

What would most likely occur if osteoclast activity exceeds osteoblast activity over a prolonged period?

Accepted Answer

Bone mass would decrease, increasing the risk of osteoporosis.

Question 9

Which of the following is a function of the periosteum?

Accepted Answer

Provides a surface for the attachment of tendons and ligaments

Question 10

A 10-year-old child is still growing. Which structure is responsible for the lengthwise growth of their long bones?

Accepted Answer

Epiphyseal plate (cartilage)

Question 11

Which of the following best describes the process of intramembranous ossification?

Accepted Answer

Bone develops directly from mesenchymal tissue

Question 12

Which bone marking is a projection where muscles, tendons, or ligaments attach?

Accepted Answer

Trochanter

Question 13

Which of the following equations best represents the relationship between bone mass, osteoblast activity, and osteoclast activity?

Accepted Answer

$$	ext{Bone Mass} = 	ext{Osteoblast Activity} - 	ext{Osteoclast Activity}$$

Question 14

Which of the following scenarios would most likely result in increased bone density?

Accepted Answer

A person begins a regular strength training program

Question 15

Which of the following is a characteristic of spongy bone?

Accepted Answer

Contains trabeculae and is avascular in its matrix

Question 16

A patient with a genetic defect in collagen synthesis would most likely have bones that:

Accepted Answer

Are brittle and prone to shattering under stress

Question 17

Which of the following best describes the role of canaliculi in bone tissue?

Accepted Answer

They allow for the exchange of nutrients, wastes, and gases between osteocytes and blood vessels.

Question 18

Which of the following bones is part of the axial skeleton?

Accepted Answer

Sternum

Question 19

Which of the following is a correct pairing of bone cell and its function?

Accepted Answer

Osteoblast – produces new bone matrix

Question 20

A 70-year-old woman is diagnosed with osteoporosis. Which of the following best explains the pathophysiology of her condition?

Accepted Answer

Osteoclast activity exceeds osteoblast activity, leading to decreased bone mass.

The Skeletal System: Structure, Function, and Growth

Study Guide - Practice Questions