$$\text{Bone Strength} \propto \text{Mechanical Stress}$$

Question 1

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

Accepted Answer

Hormone secretion

Question 2

Which type of bone cell is primarily responsible for bone resorption?

Accepted Answer

Osteoclast

Question 3

A patient presents with a fracture that does not break the skin. What type of fracture is this?

Accepted Answer

Closed (simple) fracture

Question 4

Which hormone increases blood calcium levels by stimulating osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 5

Which structure is the site of blood cell formation in bones?

Accepted Answer

Red marrow

Question 6

During bone growth, which zone of the epiphyseal plate is responsible for new cartilage production?

Accepted Answer

Zone of proliferation

Question 7

Which process describes the formation of bone from pre-existing connective tissue membranes?

Accepted Answer

Intramembranous ossification

Question 8

A child is diagnosed with rickets, a condition caused by insufficient mineralization of bone. Which vitamin deficiency is most likely responsible?

Accepted Answer

Vitamin D

Question 9

Which of the following best describes the function of hyaline cartilage?

Accepted Answer

Forms most of the embryonic skeleton and covers the ends of long bones

Question 10

Which bone shape category includes the vertebrae?

Accepted Answer

Irregular bones

Question 11

A patient has a fracture with multiple bone fragments. What type of fracture is this?

Accepted Answer

Comminuted fracture

Question 12

Which of the following is a major factor affecting bone growth?

Accepted Answer

Nutrition

Question 13

Which of the following equations correctly represents the relationship between bone strength and mechanical stress?

Accepted Answer

$$	ext{Bone Strength} \propto 	ext{Mechanical Stress}$$

Question 14

Which of the following bones is part of the axial skeleton?

Accepted Answer

Rib cage

Question 15

Which structure allows for the passage of blood vessels and nerves through compact bone?

Accepted Answer

Perforating canals (Volkmann's canals)

Question 16

Which of the following is the correct sequence for the major steps in bone repair after a fracture?

Accepted Answer

Hematoma formation, Callus formation, Ossification, Bone remodeling

Question 17

Which of the following best describes appositional growth in cartilage?

Accepted Answer

Addition of new cartilage matrix on the surface by chondroblasts

Question 18

Which bone cell type is derived from mesenchymal stem cells and is responsible for bone formation?

Accepted Answer

Osteoblast

Question 19

Which of the following statements about spongy bone is TRUE?

Accepted Answer

It contains trabeculae and spaces filled with marrow

Question 20

A 12-year-old patient has not yet closed their epiphyseal plates. What does this indicate?

Accepted Answer

Bone growth in length is still possible

Skeletal System: Structure, Function, and Bone Biology

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