Q: Which of the following equations correctly represents the relationship between bone mass, bone deposition, and bone resorption?

$$\text{Bone Mass} = \text{Bone Deposition} - \text{Bone Resorption}$$

Question 1

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

Accepted Answer

They resorb bone by breaking down the matrix, releasing calcium into the blood.

Question 2

A patient presents with bowed legs and enlarged, abnormally long bone ends. Laboratory tests reveal a vitamin D deficiency. Which condition is most likely present?

Accepted Answer

Rickets

Question 3

Which of the following equations correctly represents the relationship between bone mass, bone deposition, and bone resorption?

Accepted Answer

$$	ext{Bone Mass} = 	ext{Bone Deposition} - 	ext{Bone Resorption}$$

Question 4

Which hormone is primarily responsible for stimulating osteoclast activity to increase blood calcium levels?

Accepted Answer

Parathyroid hormone (PTH)

Question 5

A 70-year-old woman suffers a hip fracture after a minor fall. Her bone density scan shows decreased bone mass but normal bone matrix composition. Which disease is most likely?

Accepted Answer

Osteoporosis

Question 6

Which of the following best describes the process of endochondral ossification?

Accepted Answer

Bone forms by replacing hyaline cartilage models.

Question 7

Which of the following is NOT a function of bone?

Accepted Answer

Synthesis of vitamin D

Question 8

Which bone cell type is responsible for synthesizing the organic matrix of bone, known as osteoid?

Accepted Answer

Osteoblast

Question 9

A long bone grows in length primarily through which process at the epiphyseal plate?

Accepted Answer

Interstitial growth

Question 10

Which of the following best explains why bones of bedridden patients become featureless?

Accepted Answer

Lack of mechanical stress leads to reduced bone remodeling.

Question 11

Which of the following is the correct sequence of events in bone fracture repair?

Accepted Answer

Hematoma forms → Fibrocartilaginous callus forms → Bony callus forms → Bone remodeling

Question 12

Which of the following best describes the composition and function of hydroxyapatite in bone?

Accepted Answer

It is a mineral salt responsible for bone hardness and resistance to compression.

Question 13

Which of the following bone markings is correctly matched with its function?

Accepted Answer

Head – forms part of a joint

Question 14

Which of the following statements about the periosteum is TRUE?

Accepted Answer

It contains an osteogenic layer with stem cells for bone growth and repair.

Question 15

A child with a mutation that prevents the formation of Sharpey’s fibers would most likely experience which of the following?

Accepted Answer

Impaired anchoring of tendons and ligaments to bone

Question 16

Which of the following best explains why yellow bone marrow can convert to red bone marrow?

Accepted Answer

To enhance hematopoiesis in cases of severe anemia

Question 17

Which of the following is a correct statement about the microscopic structure of compact bone?

Accepted Answer

Lamellae in osteons are arranged in concentric rings around a central canal.

Question 18

Which of the following best describes Wolff’s law?

Accepted Answer

Bones grow or remodel in response to the mechanical stresses placed on them.

Question 19

Which of the following is the main difference between intramembranous and endochondral ossification?

Accepted Answer

Intramembranous ossification forms bones from fibrous membranes, while endochondral ossification forms bones from hyaline cartilage.

Question 20

A patient has a blood calcium level of 7 mg/dl (normal: 9–11 mg/dl). Which of the following symptoms is most likely to occur?

Accepted Answer

Hyperexcitability of nerves and muscles

Bones and Skeletal Tissues: Structure, Function, and Development

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