Question 1

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

Accepted Answer

They digest the organic matrix of bone and convert calcium salts into soluble forms for release into the blood.

Question 2

A patient presents with a greenstick fracture. Which of the following best describes this type of fracture?

Accepted Answer

The bone breaks incompletely, similar to a green twig.

Question 3

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

Accepted Answer

Hematoma formation → Fibrocartilaginous callus formation → Bony callus formation → Remodeling

Question 4

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

Accepted Answer

Sternum

Question 5

A long bone grows in length primarily through which process?

Accepted Answer

Interstitial growth at the epiphyseal plate

Question 6

Which of the following best describes the structure and function of the Haversian (central) canal in compact bone?

Accepted Answer

It is a central channel in an osteon that contains blood vessels and nerve fibers.

Question 7

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

Accepted Answer

Spongy bone consists of trabeculae with spaces that may contain marrow.

Question 8

A 10-year-old child is still growing. Which structure in their long bones is responsible for continued lengthwise growth?

Accepted Answer

Epiphyseal plate

Question 9

Which of the following best describes the chemical composition of bone that accounts for its hardness?

Accepted Answer

Hydroxyapatite crystals in the inorganic matrix

Question 10

During bone remodeling, which hormone is released in response to low blood calcium levels, and what is its effect?

Accepted Answer

Parathyroid hormone (PTH); stimulates osteoclast activity to release calcium into the blood

Question 11

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

Accepted Answer

Tubercle: small, rounded projection

Question 12

A patient has a fracture in the shaft of their femur. Which anatomical term best describes this region of the bone?

Accepted Answer

Diaphysis

Question 13

Which of the following statements about intramembranous ossification is correct?

Accepted Answer

It forms cranial bones and the clavicle from fibrous membranes.

Question 14

Which of the following is true regarding appositional growth of bone?

Accepted Answer

It involves osteoblasts adding bone matrix to the external surface of the bone.

Question 15

A 65-year-old woman has increased bone resorption and decreased bone mass. Which of the following nutrients is most important for osteoblast activity to counteract this process?

Accepted Answer

Vitamin D

Question 16

Which of the following best describes the role of Sharpey's fibers in bone?

Accepted Answer

They connect the periosteum to the underlying bone.

Question 17

A bone is classified as irregular if it:

Accepted Answer

Has a complicated shape, such as vertebrae or hip bones.

Question 18

Which of the following best explains why compact bone is able to resist twisting forces?

Accepted Answer

The arrangement of collagen fibers in adjacent lamellae running in different directions.

Question 19

Which of the following is a correct statement about the periosteum?

Accepted Answer

It is a double-layered membrane covering the outer surface of bone, providing anchoring points for tendons and ligaments.

Question 20

A 14-year-old athlete sustains a fracture that separates the diaphysis from the epiphysis at the distal femur. Which structure is most likely involved?

Accepted Answer

Epiphyseal plate

Comprehensive Study Notes on Bone Tissue: Structure, Classification, Growth, and Repair

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