Question 1

Which structure is responsible for lining the medullary cavity and plays a role in bone growth, repair, and remodeling?

Accepted Answer

Endosteum

Question 2

What is the function of the central canal in an osteon?

Accepted Answer

It houses blood vessels and nerves that supply the bone.

Question 3

Which of the following best describes the orientation of collagen fibers in adjacent lamellae of an osteon?

Accepted Answer

They are arranged in alternating directions to provide strength.

Question 4

A patient suffers a bone fracture. Which structure is most directly involved in the repair process by providing osteoprogenitor cells?

Accepted Answer

Endosteum

Question 5

Which of the following is NOT a component of the osteon?

Accepted Answer

Trabeculae

Question 6

What is the primary function of perforating fibers (Sharpey's fibers) in bone?

Accepted Answer

They anchor the periosteum to the underlying bone.

Question 7

Which blood vessel type is most likely to be found within the central canal of an osteon?

Accepted Answer

Capillary

Question 8

A histological section of compact bone reveals layers of bony matrix surrounding a central canal. What are these layers called?

Accepted Answer

Concentric lamellae

Question 9

Which structure fills the spaces between osteons in compact bone?

Accepted Answer

Interstitial lamellae

Question 10

In a long bone, which structure is found lining the inner surface of the diaphysis?

Accepted Answer

Endosteum

Question 11

Which of the following best describes the function of circumferential lamellae?

Accepted Answer

They encircle the entire bone shaft, providing additional strength.

Question 12

A patient with osteoporosis has weakened trabeculae in their bones. What is the likely consequence?

Accepted Answer

Increased risk of fractures due to reduced structural support.

Question 13

Which of the following is a distinguishing feature of spongy bone compared to compact bone?

Accepted Answer

Presence of trabeculae instead of osteons.

Question 14

If a bone is subjected to increased mechanical stress, which structure is most likely to thicken in response?

Accepted Answer

Circumferential lamellae

Question 15

Which of the following best explains why osteons are cylindrical in shape?

Accepted Answer

Cylindrical shape allows for optimal resistance to compressive forces along the bone's axis.

Osseous Tissue Structure and Organization

스터디 가이드 - 연습 문제