$$206 = \text{Axial skeleton bones} + \text{Appendicular skeleton bones}$$

Question 1

Which of the following best describes the movement of abduction at the shoulder joint?

Accepted Answer

Moving the arm away from the midline of the body

Question 2

A patient presents with a fracture in the shaft of the femur. Which anatomical term best describes the location of this fracture?

Accepted Answer

Diaphysis

Question 3

Which bone cell type is primarily responsible for bone resorption and plays a key role in calcium homeostasis?

Accepted Answer

Osteoclasts

Question 4

During endochondral ossification, which of the following occurs first?

Accepted Answer

Formation of a bone collar around the diaphysis

Question 5

A gymnast lands awkwardly and suffers a fracture that breaks the skin. What type of fracture is this?

Accepted Answer

Open fracture

Question 6

Which of the following best describes the function of osteocytes?

Accepted Answer

Maintain the bone matrix

Question 7

Which movement is demonstrated when turning the palm of the hand from facing upward to facing downward?

Accepted Answer

Pronation

Question 8

A patient with osteoporosis is more likely to experience which type of fracture, even with minimal trauma?

Accepted Answer

Pathological fracture

Question 9

Which of the following is the correct sequence for the healing of a bone fracture?

Accepted Answer

Fracture hematoma, soft callus, hard callus, remodeling

Question 10

Which of the following best describes the composition of the bone matrix?

Accepted Answer

Two-thirds inorganic calcium phosphate and one-third organic collagen fibers

Question 11

Which type of bone is characterized by layers of compact bone with a middle layer of spongy bone, and is found in the sternum and cranial bones?

Accepted Answer

Flat bones

Question 12

Which of the following movements would be used to stand on your tiptoes?

Accepted Answer

Plantar flexion

Question 13

A patient is unable to move their thumb to touch the tips of their other fingers. Which movement is impaired?

Accepted Answer

Opposition

Question 14

Which of the following is a correct description of the periosteum?

Accepted Answer

A membrane with a fibrous outer layer and an osteogenic inner layer

Question 15

Which of the following best describes the function of osteoblasts?

Accepted Answer

Produce extracellular matrix during osteogenesis

Question 16

Which of the following is an example of a sesamoid bone?

Accepted Answer

Patella

Question 17

Which of the following best describes the process of lateral rotation at the shoulder?

Accepted Answer

Turning the humerus outward, away from the midline

Question 18

Which of the following is the correct formula for calculating the total number of bones in the adult human body?

Accepted Answer

$$206 = 	ext{Axial skeleton bones} + 	ext{Appendicular skeleton bones}$$

Question 19

A child is diagnosed with a fracture at the epiphyseal plate. Why is this clinically significant?

Accepted Answer

It may affect future bone growth

Question 20

Which of the following best describes the difference between compact and spongy bone?

Accepted Answer

Compact bone is organized into osteons, while spongy bone is composed of trabeculae

Skeletal System: Bone Structure, Cells, and Joint Movements

Study Guide - Practice Questions