Q: Which of the following equations best represents the negative feedback loop for calcium homeostasis in bone?

$$\text{Stimulus} \rightarrow \text{Receptor} \rightarrow \text{Effector} \rightarrow \text{Response} \rightarrow \text{Return to Homeostasis}$$

Question 1

Which of the following best describes the function of hyaline cartilage in the adult skeletal system?

Accepted Answer

It acts as a forerunner for bone tissue and covers most joints, facilitating smooth articulation.

Question 2

A patient presents with a fracture in the vertebral column. Which type of cartilage is most likely to be involved in absorbing shock at the site of injury?

Accepted Answer

Fibrocartilage

Question 3

Which of the following is NOT a component of bone tissue?

Accepted Answer

Muscle fibers

Question 4

How many bones are typically found in the adult human skeleton, and which region contains the most bones?

Accepted Answer

206 bones; the appendicular skeleton contains the most bones.

Question 5

Which bone marking is best described as a rounded articular projection that often forms a joint?

Accepted Answer

Condyle

Question 6

A newborn has approximately 270 bones, but an adult has 206. What accounts for this difference?

Accepted Answer

Fusion of separate bones during development.

Question 7

Which of the following is a sesamoid bone, and what is its function?

Accepted Answer

Patella; it forms within tendons in response to strain and improves leverage.

Question 8

Which of the following correctly matches the type of vertebrae with its quantity in the adult human vertebral column?

Accepted Answer

Cervical: 7, Thoracic: 12, Lumbar: 5, Sacral: 5, Coccygeal: 4

Question 9

Which abnormal spinal curvature is characterized by an exaggerated thoracic curve resulting in a hunchback appearance?

Accepted Answer

Kyphosis

Question 10

During bone remodeling, which cell type is responsible for secreting hydrogen ions and enzymes to break down bone matrix?

Accepted Answer

Osteoclasts

Question 11

Which of the following best explains the role of the anulus fibrosus in an intervertebral disc?

Accepted Answer

It is the outer ring of fibrocartilage that contains the nucleus pulposus and binds adjacent vertebrae.

Question 12

Which hormone increases blood calcium levels by stimulating bone resorption?

Accepted Answer

Parathyroid hormone (PTH)

Question 13

A compound fracture is best defined as:

Accepted Answer

A fracture where the skin and tissues around the bone are damaged.

Question 14

Which of the following bones is NOT part of the axial skeleton?

Accepted Answer

Pelvic girdle

Question 15

Which bone marking allows for the passage of blood vessels and nerves through a bone?

Accepted Answer

Foramen

Question 16

Fontanels in the fetal skull are important because they:

Accepted Answer

Permit flexibility and growth of the skull during birth and early development.

Question 17

Which of the following is a function of ligaments in the skeletal system?

Accepted Answer

They hold bones together at joints (articulations).

Question 18

Which of the following equations best represents the negative feedback loop for calcium homeostasis in bone?

Accepted Answer

$$	ext{Stimulus} ightarrow 	ext{Receptor} ightarrow 	ext{Effector} ightarrow 	ext{Response} ightarrow 	ext{Return to Homeostasis}$$

Question 19

Which of the following is a projection that serves as an attachment site for ligaments or tendons?

Accepted Answer

Crest

Question 20

Which of the following bones articulate to form the right hip bone in the adult skeleton?

Accepted Answer

Ilium, ischium, and pubis

Chapter 7: The Skeletal System – Structure, Components, and Functions

Study Guide - Practice Questions

Study Guide - Flashcards