$$[Ca$$^{2+}$$]_{blood} \uparrow \implies \text{bone resorption} \downarrow$$

Question 1

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

Accepted Answer

Regulation of body temperature

Question 2

A patient presents with a fracture in a bone that is roughly cube-shaped and found in the wrist. How would you classify this bone based on its shape?

Accepted Answer

Short bone

Question 3

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

Accepted Answer

Red marrow produces blood cells, yellow marrow stores fat

Question 4

Which component of the bone matrix provides tensile strength and flexibility?

Accepted Answer

Collagen fibers

Question 5

What is the primary function of osteoclasts in bone tissue?

Accepted Answer

Bone resorption

Question 6

Which structure is the functional unit of compact bone?

Accepted Answer

Osteon

Question 7

During intramembranous ossification, which type of tissue is replaced by bone?

Accepted Answer

Fibrous connective tissue membrane

Question 8

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

Accepted Answer

Longitudinal growth

Question 9

Which hormone increases blood calcium levels by stimulating osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 10

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

Accepted Answer

Decreased calcium absorption and weaker bones

Question 11

Which of the following best describes the process of bone remodeling?

Accepted Answer

Replacement of primary bone with secondary bone

Question 12

A 30-year-old athlete suffers a bone fracture. Which sequence best represents the general process of bone repair?

Accepted Answer

Hematoma formation → fibrocartilaginous callus → bony callus → bone remodeling

Question 13

Which of the following equations correctly represents the relationship between calcium ion concentration and bone resorption?

Accepted Answer

$$[Ca$$^{2+}$$]_{blood} \uparrow \implies 	ext{bone resorption} \downarrow$$

Question 14

Which hormone is most likely to be secreted in response to hypercalcemia (high blood calcium levels)?

Accepted Answer

Calcitonin

Question 15

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

Accepted Answer

It stimulates bone deposition by osteoblasts

Question 16

A patient with a tumor that increases secretion of parathyroid hormone (PTH) would most likely experience which of the following?

Accepted Answer

Increased bone resorption and elevated blood calcium

Question 17

Which of the following is a characteristic of secondary (lamellar) bone compared to primary (woven) bone?

Accepted Answer

It has a regular parallel alignment of collagen fibers

Question 18

Which of the following best describes appositional growth of bone?

Accepted Answer

Growth in width by addition of bone matrix to the surface

Question 19

Which of the following scenarios best illustrates the role of bone as a mineral reservoir?

Accepted Answer

A person with low dietary calcium experiences increased bone resorption to maintain blood calcium levels

Question 20

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

Accepted Answer

They maintain the bone matrix and communicate with other bone cells

Bones and Bone Tissue: Structure, Function, and Physiology

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