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 presents with a fracture in the diaphysis of their femur. Which part of a typical long bone is the diaphysis?

Accepted Answer

The shaft or central part of the bone

Question 3

Which type of bone cell is primarily responsible for bone resorption during the remodeling process?

Accepted Answer

Osteoclast

Question 4

The osteon (Haversian system) is a structural unit found in which type of bone tissue?

Accepted Answer

Compact bone

Question 5

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

Accepted Answer

Compact bone is dense and forms the outer layer of bones, while spongy bone is porous and found at the ends of long bones.

Question 6

During intramembranous ossification, which of the following occurs FIRST?

Accepted Answer

Mesenchymal cells differentiate into osteoblasts

Question 7

Which of the following best describes bone remodeling?

Accepted Answer

Continuous process of bone resorption and formation to maintain bone strength and mineral homeostasis

Question 8

A patient with osteoporosis is at increased risk for fractures because:

Accepted Answer

Bone resorption exceeds bone formation, leading to decreased bone mass

Question 9

Which of the following is a correct pairing of a synovial joint type and its example?

Accepted Answer

Ball and socket joint – shoulder

Question 10

Which structure is found in most synovial joints and functions to reduce friction between articulating bones?

Accepted Answer

Articular cartilage

Question 11

Which movement term describes decreasing the angle between two bones, such as bending the elbow?

Accepted Answer

Flexion

Question 12

Which of the following best describes the difference between the male and female pelvis?

Accepted Answer

The female pelvis is wider and has a larger pelvic inlet to facilitate childbirth

Question 13

Which of the following is an abnormal curvature of the spine characterized by a lateral deviation?

Accepted Answer

Scoliosis

Question 14

Which of the following joints is classified as a fibrous joint?

Accepted Answer

Suture between skull bones

Question 15

Which of the following is a functionally classified synarthrosis joint?

Accepted Answer

Suture in the skull

Question 16

Which movement term describes turning the palm of the hand from facing anteriorly to facing posteriorly?

Accepted Answer

Pronation

Question 17

A gymnast performs a split, moving her legs away from the midline of her body. Which movement term best describes this action?

Accepted Answer

Abduction

Question 18

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

Accepted Answer

Bone forms by replacing a hyaline cartilage model

Question 19

Which of the following equations best represents the relationship between bone mass, bone formation, and bone resorption during bone remodeling?

Accepted Answer

$$\Delta M = F - R$$

Question 20

A patient is unable to perform dorsiflexion at the ankle. Which movement is most likely impaired?

Accepted Answer

Lifting the foot upwards towards the shin

Skeletal System: Structure, Function, and Joints – Study Notes

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