Question 1

Which of the following is NOT a primary function of the skeletal system?

Accepted Answer

Production of hormones such as insulin

Question 2

A patient presents with a fracture in a bone that is classified as 'sesamoid.' Which of the following is the most likely location of this fracture?

Accepted Answer

Patella

Question 3

Which of the following best describes the difference between red and yellow bone marrow?

Accepted Answer

Red marrow is primarily involved in hematopoiesis, while yellow marrow stores triglycerides.

Question 4

Which of the following equations correctly represents the main inorganic component of bone matrix?

Accepted Answer

$$Ca_{10}(PO_4$)_6(OH)_2$$

Question 5

Which cell type is primarily responsible for bone resorption during bone remodeling?

Accepted Answer

Osteoclasts

Question 6

A child is diagnosed with a growth disorder affecting the epiphyseal plate. Which process is most directly impaired?

Accepted Answer

Longitudinal bone growth

Question 7

Which hormone increases blood calcium levels by stimulating osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 8

During the healing of a bone fracture, which step occurs first?

Accepted Answer

Formation of a hematoma

Question 9

Which of the following best describes the structure of an osteon in compact bone?

Accepted Answer

A cylindrical unit composed of concentric lamellae surrounding a central canal

Question 10

Which process is responsible for the formation of most bones below the base of the skull?

Accepted Answer

Endochondral ossification

Question 11

A patient with vitamin D deficiency is likely to experience which of the following effects on bone?

Accepted Answer

Decreased calcium absorption leading to weaker bones

Question 12

Which of the following best describes appositional growth of bone?

Accepted Answer

Increase in bone diameter by addition of new bone tissue at the surface

Question 13

Which of the following is a physical factor that stimulates bone remodeling?

Accepted Answer

Mechanical stress from weight-bearing exercise

Question 14

Which hormone is released in response to high blood calcium levels and acts to decrease those levels?

Accepted Answer

Calcitonin

Question 15

Which of the following best describes the difference between primary and secondary bone?

Accepted Answer

Primary bone is woven and temporary, while secondary bone is organized and stronger.

Question 16

A patient with a tumor that increases osteoblast activity would most likely experience which of the following?

Accepted Answer

Increased bone deposition

Question 17

Which of the following is a correct sequence of events in endochondral ossification?

Accepted Answer

Formation of bone collar, cavitation of cartilage, invasion of periosteal bud, formation of medullary cavity

Question 18

Which of the following dietary factors is most important for proper bone mineralization?

Accepted Answer

Adequate intake of calcium and vitamin D

Question 19

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

Accepted Answer

Maintain the bone matrix and communicate with other bone cells

Question 20

A 25-year-old athlete suffers a compound fracture. Which of the following steps is most critical for restoring the bone's original shape and strength?

Accepted Answer

Bone remodeling

Bones and Bone Tissue: Structure, Function, and Physiology

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