CNA Anatomy and Physiology Basics 3

Question 1

Which chamber of the heart pumps oxygenated blood to the entire body through the aorta?

Accepted Answer

Left ventricle

Answer

The left ventricle is the heart's most muscular chamber and pumps oxygenated blood through the aorta to supply the entire body with oxygen-rich blood.

Question 2

The cerebellum is responsible for:

Accepted Answer

Coordinating balance and muscle movements

Answer

The cerebellum coordinates voluntary muscle movements, maintains balance and posture, and fine-tunes motor activity to ensure smooth, precise movement.

Question 3

Which blood cells are primarily responsible for fighting infections?

Accepted Answer

Leukocytes (white blood cells)

Answer

Leukocytes (white blood cells) are the primary immune cells that identify and destroy pathogens, foreign substances, and abnormal cells to protect the body from infection.

Question 4

The periosteum is:

Accepted Answer

The tough membrane covering the outer surface of bones

Answer

The periosteum is the dense fibrous membrane that covers the outer surface of bones (except at joint surfaces), containing blood vessels and nerves essential for bone nutrition, growth, and repair.

Question 5

Which part of the digestive system produces bile?

Accepted Answer

Liver

Answer

The liver produces bile, a digestive fluid that emulsifies fats to aid in their digestion and absorption. Bile is stored in the gallbladder and released into the small intestine when needed.

CNA Practice Test

CNA Practice Test

CNA Anatomy and Physiology Basics 3