Question 1

Which of the following best describes the difference between compact bone and spongy bone in terms of structure and function?

Accepted Answer

Compact bone is dense and forms the outer layer of bones; spongy bone has trabeculae and contains marrow.

Question 2

During endochondral ossification, which type of cartilage is replaced to form long bones?

Accepted Answer

Hyaline cartilage

Question 3

Which hormone increases blood calcium levels by stimulating osteoclasts?

Accepted Answer

Parathyroid hormone

Question 4

A patient with osteoporosis is prescribed a medication that inhibits osteoclast activity. What is the expected effect on bone tissue?

Accepted Answer

Decreased bone breakdown and increased bone density

Question 5

Which structure in a long bone is responsible for producing blood cells?

Accepted Answer

Red bone marrow

Question 6

The central canal of an osteon contains which of the following?

Accepted Answer

Blood vessels and nerves

Question 7

Which cell type is responsible for building new bone matrix?

Accepted Answer

Osteoblasts

Question 8

A fracture in the diaphysis of a long bone will primarily affect which type of bone tissue?

Accepted Answer

Compact bone

Question 9

Which process is described by the equation $$\Delta [Ca$$^{2+}$$] = R_{resorption} - R_{formation}$$, where $$\Delta [Ca$$^{2+}$$] is $$the change in blood calcium concentration?

Accepted Answer

Bone remodeling

Question 10

Which hormone would most likely decrease blood calcium levels by inhibiting osteoclast activity?

Accepted Answer

Calcitonin

Question 11

A child with a vitamin D deficiency is likely to have impaired bone mineralization. Which process is most directly affected?

Accepted Answer

Endochondral ossification

Question 12

Which of the following best explains the role of osteoclasts in bone remodeling?

Accepted Answer

Osteoclasts break down bone tissue, releasing calcium into the blood.

Question 13

Which of the following is a correct sequence for fracture repair in bone?

Accepted Answer

Hematoma formation → Cartilage callus formation → Bone callus formation → Bone remodeling

Question 14

Which equation best represents the relationship between bone mass ($$M$$), bone formation rate ($$F$$), and bone resorption rate ($$R) $$over time ($$t$$)?

Accepted Answer

$$M(t) = F(t) - R(t)$$

Question 15

Which of the following is NOT a function of bone tissue?

Accepted Answer

Synthesis of hormones

Question 16

A patient with hyperparathyroidism is likely to experience which of the following effects on their bones?

Accepted Answer

Decreased bone density due to increased osteoclast activity

Question 17

Which of the following best describes the microscopic anatomy of an osteon?

Accepted Answer

A central canal surrounded by concentric lamellae

Question 18

Which type of cartilage is most important for the growth of long bones during childhood?

Accepted Answer

Hyaline cartilage

Question 19

If a patient’s bone formation rate is $$F = 2$$ units/day and bone resorption rate is $$R = 1$$ unit/day, what is the net change in bone mass per day?

Accepted Answer

$$1$$ unit/day

Question 20

Which of the following is most likely to occur if osteoblast activity exceeds osteoclast activity over time?

Accepted Answer

Bone mass will increase

Skeletal System: Bone Structure and Function – Study Guide

Guida di studio - Domande di pratica

Study guide - Flashcard