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 suffers a bone fracture. Which cell type is most directly responsible for removing damaged bone tissue during the initial phase of repair?

Accepted Answer

Osteoclast

Question 3

Which of the following best describes the periosteum?

Accepted Answer

A dense, vascular membrane covering the outer surface of bone, providing protection and a site for muscle attachment

Question 4

During endochondral ossification, which of the following events occurs FIRST?

Accepted Answer

Chondrocytes enlarge and the surrounding cartilage matrix begins to calcify

Question 5

Which equation best represents the relationship between bone strength ($S$), bone mass ($M$), and bone density ($D$)?

Accepted Answer

$S = M 	imes D$

Question 6

A 25-year-old athlete increases the load on her bones through weight training. According to Wolff's Law, what is the expected physiological response?

Accepted Answer

Bone will become denser and stronger in response to increased mechanical stress

Question 7

Which of the following statements about osteocytes is TRUE?

Accepted Answer

They maintain bone tissue and help regulate mineral content

Question 8

A child is diagnosed with rickets, a disease characterized by soft, weak bones. Which process is most likely impaired?

Accepted Answer

Calcification, the deposition of calcium ions into bone tissue

Question 9

Which of the following best distinguishes compact bone from spongy bone?

Accepted Answer

Compact bone contains osteons arranged in parallel, while spongy bone contains trabeculae arranged in a lattice

Question 10

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

Accepted Answer

Mesenchymal cells differentiate into osteoblasts, osteoblasts secrete bone matrix, osteocytes form as osteoblasts become trapped

Question 11

A patient with osteoporosis is at increased risk for fractures. Which of the following best explains this increased risk?

Accepted Answer

Decreased bone density leads to reduced bone strength

Question 12

Which of the following is TRUE regarding the endosteum?

Accepted Answer

It lines the medullary cavity and is involved in bone growth, repair, and remodeling

Question 13

Which cell type is primarily responsible for bone formation during growth and fracture repair?

Accepted Answer

Osteoblast

Question 14

A long bone is fractured at the diaphysis. Which structure is most likely to be directly involved in the initial inflammatory response?

Accepted Answer

Periosteum

Question 15

Which of the following best explains why bone is stronger in one plane but weaker in another?

Accepted Answer

The orientation of collagen fibers and osteons in compact bone provides strength along the axis of stress

Question 16

Which of the following is a function of red bone marrow?

Accepted Answer

Production of blood cells

Question 17

A 60-year-old patient has decreased osteoblast activity. What is the most likely consequence for bone tissue?

Accepted Answer

Reduced bone formation leading to decreased bone mass

Question 18

Which of the following best describes the process of calcification?

Accepted Answer

The deposition of calcium ions into the bone tissue

Question 19

Which of the following is a characteristic of spongy bone?

Accepted Answer

It contains trabeculae that provide structural support and house red marrow

Question 20

A patient has a genetic defect affecting collagen synthesis. Which property of bone is most likely to be compromised?

Accepted Answer

Bone flexibility and resistance to tensile forces

Lec3- Introduction to Skeletal Tissue: Structure, Function, and Development of Bone

Study Guide - Practice Questions