CNA Anatomy and Physiology Basics

Question 1

Which organ system is responsible for pumping blood throughout the body?

Accepted Answer

Cardiovascular system

Answer

The cardiovascular system, which includes the heart and blood vessels, is responsible for pumping and circulating blood throughout the body.

Question 2

What is the largest organ of the human body?

Accepted Answer

Skin

Answer

The skin is the largest organ of the human body. It acts as a protective barrier, regulates body temperature, and provides sensory information.

Question 3

How many chambers does the human heart have?

Accepted Answer

Four

Answer

The human heart has four chambers: the right atrium, right ventricle, left atrium, and left ventricle. These chambers work together to pump oxygenated and deoxygenated blood.

Question 4

Which part of the brain controls breathing and heart rate?

Accepted Answer

Brain stem

Answer

The brain stem controls vital automatic functions such as breathing, heart rate, and blood pressure. It connects the brain to the spinal cord.

Question 5

What is the primary function of the kidneys?

Accepted Answer

Filter waste from the blood and produce urine

Answer

The kidneys filter waste products and excess fluids from the blood, which are then excreted as urine. They also help regulate blood pressure and electrolyte balance.

CNA Practice Test

CNA Practice Test

CNA Anatomy and Physiology Basics