Question 1

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

Accepted Answer

Bone replaces a pre-existing hyaline cartilage model, beginning at the primary ossification center.

Question 2

Which of the following is NOT a function of yellow bone marrow?

Accepted Answer

Production of red blood cells

Question 3

A patient presents with a fracture in the diaphysis of the femur. Which type of bone tissue is primarily affected?

Accepted Answer

Compact (cortical) bone

Question 4

Which of the following equations correctly represents the relationship between bone mass, bone formation, and bone resorption?

Accepted Answer

$$Bone\ mass = Bone\ formation - Bone\ resorption$$

Question 5

Which hormone is released in response to low blood calcium levels and what is its primary effect on bone?

Accepted Answer

Parathyroid hormone (PTH); increases bone resorption

Question 6

A 65-year-old woman is diagnosed with osteoporosis. Which of the following best explains the pathophysiology of her condition?

Accepted Answer

Increased bone resorption relative to bone formation

Question 7

Which of the following best describes the function of osteoclasts?

Accepted Answer

Resorb and break down bone tissue

Question 8

A 22-year-old athlete experiences muscle soreness 24-72 hours after intense exercise. What is the most likely cause of this delayed onset muscle soreness (DOMS)?

Accepted Answer

Microtears in muscle fibers and inflammation

Question 9

Which of the following best describes the role of the Haversian canal in compact bone?

Accepted Answer

It provides a passageway for blood vessels and nerves.

Question 10

Which of the following equations correctly represents the calculation of bone mineral density (BMD)?

Accepted Answer

$$BMD = \frac{Bone\ mineral\ content}{Bone\ area}$$

Question 11

Which of the following is a distinguishing feature of synovial joints compared to other joint types?

Accepted Answer

Presence of a joint cavity filled with synovial fluid

Question 12

A patient with hypocalcemia is found to have increased levels of parathyroid hormone (PTH). Which of the following is a direct effect of PTH on the kidneys?

Accepted Answer

Increased reabsorption of calcium

Question 13

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

Accepted Answer

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

Question 14

Which of the following is the correct sequence of events in bone fracture healing?

Accepted Answer

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

Question 15

Which of the following best explains why weight-bearing exercise is recommended for bone health?

Accepted Answer

It stimulates osteoblast activity, increasing bone formation and density.

Question 16

Which of the following is a correct description of the epiphyseal plate?

Accepted Answer

A layer of hyaline cartilage where longitudinal bone growth occurs in children

Question 17

A 40-year-old male has a torn muscle. What is the primary concern with this injury?

Accepted Answer

Impaired muscle function and risk of scar tissue formation

Question 18

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

Accepted Answer

They connect osteocytes and allow for nutrient and waste exchange.

Question 19

Which of the following is a common cause of muscular atrophy?

Accepted Answer

Prolonged immobilization or lack of use

Question 20

Which of the following best explains the difference between gravitational and functional stress on bone?

Accepted Answer

Gravitational stress is due to body weight, while functional stress is due to muscle contractions.

Comprehensive Study Guide: Skeletal and Muscular Systems in Anatomy & Physiology

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