Question 1

Which of the following best describes the primary function of osteoclasts in bone tissue?

Accepted Answer

They break down bone matrix.

Question 2

A 12-year-old baseball player develops pain and swelling at the medial epicondyle of the humerus. This is most likely an example of which type of injury?

Accepted Answer

Little league elbow

Question 3

Which of the following statements about bone composition is correct?

Accepted Answer

Hydroxyapatite accounts for roughly 65% of bone's dry weight.

Question 4

Which of the following bones is classified as a flat bone?

Accepted Answer

Scapula

Question 5

A patient has a genetic disorder affecting the production of collagen in bone. Which property of bone is most likely to be compromised?

Accepted Answer

Bone flexibility

Question 6

Which of the following is NOT considered part of the skeletal system?

Accepted Answer

Tendons

Question 7

Which of the following best describes the role of osteocytes?

Accepted Answer

They maintain bone matrix.

Question 8

A long bone such as the femur is characterized by which of the following structural features?

Accepted Answer

A shaft with at least one end

Question 9

Which of the following equations correctly represents the chemical formula for hydroxyapatite, the main mineral in bone matrix?

Accepted Answer

$$Ca_{10}[PO_4$]_6[OH]_2$$

Question 10

Which of the following is a function of the axial skeleton?

Accepted Answer

Protecting the brain and spinal cord

Question 11

A child presents with pain and swelling at the tibial tuberosity after repetitive jumping activities. Which condition is most likely?

Accepted Answer

Osgood-Schlatter syndrome

Question 12

Which of the following best explains why bone is considered a living tissue?

Accepted Answer

It contains blood vessels, nerves, and living cells.

Question 13

Which of the following statements about bone marrow is correct?

Accepted Answer

Red bone marrow is involved in hematopoiesis.

Question 14

A patient with a deficiency in calcium ions ($$Ca^{2+}) $$would most likely experience which of the following?

Accepted Answer

Decreased bone mineralization

Question 15

Which of the following is a correct pairing of bone classification and example?

Accepted Answer

Flat bone – scapula

Question 16

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

Accepted Answer

It covers the outer surface of bone and contains blood vessels and nerves.

Question 17

Which of the following is a major function of the skeletal system?

Accepted Answer

Support and protection of organs

Question 18

If a bone is classified as irregular, which of the following is most likely an example?

Accepted Answer

Vertebra

Question 19

Which of the following best explains why anatomical variations are common in the human skeleton?

Accepted Answer

Variations are caused by environmental and genetic factors.

Question 20

A patient with a fracture in the diaphysis of a long bone has injured which part of the bone?

Accepted Answer

The shaft of the bone

The Skeletal System: Structure, Components, and Classification

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