Question 1

Which of the following is NOT a primary function of bone in the human body?

Accepted Answer

Production of hormones such as insulin

Question 2

Which of the following best describes the difference between compact bone and spongy bone?

Accepted Answer

Compact bone is dense and forms the outer layer of bones, while spongy bone is porous and found mainly at the ends of long bones.

Question 3

A patient suffers a fracture in the diaphysis of their femur. Which part of the bone is affected?

Accepted Answer

The shaft of the bone

Question 4

Which of the following best explains the process of bone remodeling?

Accepted Answer

Bone is continuously broken down by osteoclasts and rebuilt by osteoblasts in response to mechanical stress and calcium levels.

Question 5

Which equation correctly represents the chemical reaction for the deposition of hydroxyapatite in bone matrix?

Accepted Answer

$Ca^{2+} + PO_4^{3-} + OH^- \rightarrow Ca_{10}(PO_4)_6(OH)_2$

Question 6

Which of the following is a correct sequence of the four steps in bone fracture healing?

Accepted Answer

Hematoma formation, fibrocartilaginous callus formation, bony callus formation, bone remodeling

Question 7

A 12-year-old child is diagnosed with rickets. Which of the following best explains the cause and effect of this disease?

Accepted Answer

Vitamin D deficiency leads to poor calcium absorption, resulting in soft, deformed bones.

Question 8

Which of the following statements about bone matrix is correct?

Accepted Answer

It consists of organic components like collagen and inorganic components like hydroxyapatite.

Question 9

Which of the following best describes the difference between endochondral and intramembranous ossification?

Accepted Answer

Endochondral ossification replaces hyaline cartilage with bone, while intramembranous ossification forms bone directly from mesenchyme.

Question 10

Which of the following is a characteristic of yellow bone marrow?

Accepted Answer

It primarily stores fat and is found in the medullary cavity of long bones.

Question 11

A patient presents with brittle bones and frequent fractures. Laboratory tests reveal a deficiency in collagen production. Which component of the bone matrix is most likely affected?

Accepted Answer

Organic component (collagen fibers)

Question 12

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

Accepted Answer

They break down bone matrix, releasing calcium into the blood.

Question 13

Which of the following is a distinguishing feature of the appendicular skeleton compared to the axial skeleton?

Accepted Answer

It includes the bones of the limbs and girdles, facilitating movement.

Question 14

Which of the following best explains the significance of bone deposition?

Accepted Answer

It is essential for bone growth, repair, and maintaining bone strength by adding new bone matrix.

Question 15

A 65-year-old woman is diagnosed with osteoporosis. Which of the following best describes the pathophysiology of this disease?

Accepted Answer

Bone resorption by osteoclasts exceeds bone deposition by osteoblasts, leading to decreased bone mass and increased fracture risk.

Question 16

Which of the following is a correct description of the periosteum?

Accepted Answer

A dense connective tissue membrane covering the outer surface of bones, containing nerves and blood vessels.

Question 17

Which of the following best describes the process of longitudinal bone growth in children?

Accepted Answer

New cartilage is produced at the epiphyseal plate and then replaced by bone tissue.

Question 18

Which of the following is a common feature of comminuted fractures?

Accepted Answer

The bone is broken into three or more pieces.

Question 19

Which of the following best explains the effect of Paget's disease on bone?

Accepted Answer

It causes excessive and disorganized bone remodeling, leading to enlarged and weakened bones.

Question 20

Which of the following best describes the role of the epiphyseal plate in bone growth?

Accepted Answer

It is the site where new cartilage is produced and then replaced by bone, allowing for lengthwise growth.

Study Guide: Bone Structure, Function, and Physiology

Study Guide - Practice Questions

Study Guide - Flashcards