PSB-PN Anatomy & Physiology

Question 1

Which organ is considered the largest organ of the human body?

Accepted Answer

Skin

Answer

The skin is the largest organ, covering the entire external surface of the body and accounting for about 16% of total body weight.

Question 2

What is the normal resting heart rate range for a healthy adult?

Accepted Answer

60–100 beats per minute

Answer

A normal adult resting heart rate is 60–100 beats per minute; rates outside this range may indicate bradycardia or tachycardia.

Question 3

Which blood type is known as the universal donor for red blood cell transfusions?

Accepted Answer

O negative

Answer

Type O negative blood lacks A, B, and Rh antigens, making it compatible with all blood types and safe for emergency transfusions.

Question 4

The epiglottis serves which primary function during swallowing?

Accepted Answer

Covers the trachea to prevent aspiration

Answer

The epiglottis is a cartilaginous flap that folds over the trachea during swallowing to prevent food and liquid from entering the airway.

Question 5

How many chambers does the human heart have?

Accepted Answer

Four

Answer

The heart has four chambers: the right atrium and right ventricle (pulmonary circuit) and the left atrium and left ventricle (systemic circuit).

PSB-PN Exam Practice Test