Question 1

Which of the following best describes the function of articular cartilage found at the ends of long bones?

Accepted Answer

It reduces friction and absorbs shock between articulating bones.

Question 2

During endochondral ossification, which event occurs first?

Accepted Answer

Development of a hyaline cartilage model shaped like the future bone.

Question 3

Which bone cell type is responsible for synthesizing and secreting collagen and other organic molecules for the bone matrix?

Accepted Answer

Osteoblasts

Question 4

A patient suffers a bone fracture. Which of the following sequences correctly describes the initial steps of bone repair?

Accepted Answer

Hematoma formation, inflammation, removal of dead tissue by phagocytes

Question 5

Which of the following is TRUE regarding interstitial growth of cartilage?

Accepted Answer

It results from division of chondrocytes within lacunae and secretion of new matrix.

Question 6

Which structure in compact bone allows for metabolic interactions between osteocytes?

Accepted Answer

Canaliculi

Question 7

A long bone increases in diameter during growth. Which process is primarily responsible for this?

Accepted Answer

Appositional growth by osteoblasts in the periosteum

Question 8

Which of the following equations correctly represents the relationship between bone density ($$D$$), mass ($$m$$), and volume ($$V$$)?

Accepted Answer

$$D = \frac{m}{V}$$

Question 9

Which of the following is a consequence of aging on bone tissue?

Accepted Answer

Decreased bone density due to loss of collagen and calcium salts

Question 10

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

Accepted Answer

They break down and resorb bone during development and repair.

Question 11

A child’s long bone is growing in length. Which structure is directly responsible for this process?

Accepted Answer

Epiphyseal plate

Question 12

Which of the following statements about spongy bone is correct?

Accepted Answer

It consists of a lattice of trabeculae that helps resist stress.

Question 13

Which of the following is NOT a function of cartilage in the skeletal system?

Accepted Answer

Producing red blood cells

Question 14

Which process is responsible for the formation of flat bones of the skull?

Accepted Answer

Intramembranous ossification

Question 15

Which of the following best explains why osteoporosis increases the risk of bone fractures in elderly individuals?

Accepted Answer

Osteoporosis decreases bone density by reducing calcium and collagen content.

Question 16

Which of the following is the correct sequence of events in intramembranous ossification?

Accepted Answer

Mesenchymal cells differentiate into osteoblasts, osteoid is secreted, osteoblasts become osteocytes, woven bone forms.

Question 17

Which of the following surface markings on bone is most likely to serve as an attachment point for tendons and ligaments?

Accepted Answer

Projections or outgrowths

Question 18

Which of the following best describes the role of the periosteum?

Accepted Answer

It serves as an anchor for blood vessels and nerves on external bone surfaces.

Question 19

Which of the following is a correct statement about the blood supply to bone?

Accepted Answer

Nutrient arteries enter the diaphysis through holes in compact bone.

Question 20

A patient’s X-ray shows a faded epiphyseal plate and a visible epiphyseal line. What does this indicate?

Accepted Answer

The bone has stopped growing in length and reached maturity.

Study Notes: Introduction to the Skeletal System

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