CNA Anatomy and Physiology Basics 4

Question 1

Which layer of skin contains sweat glands, hair follicles, and blood vessels?

Accepted Answer

Dermis

Answer

The dermis is the middle layer of skin and contains sweat glands, hair follicles, sebaceous glands, and blood vessels.

Question 2

The primary function of the lymphatic system is to:

Accepted Answer

Return excess interstitial fluid to the bloodstream

Answer

The lymphatic system collects excess interstitial fluid and returns it to the circulatory system, also playing a key role in immunity.

Question 3

Which type of joint allows the greatest range of motion?

Accepted Answer

Ball-and-socket joint

Answer

Ball-and-socket joints, such as the hip and shoulder, allow movement in all planes and directions, providing the greatest range of motion.

Question 4

The organ responsible for filtering blood and producing urine is the:

Accepted Answer

Kidney

Answer

The kidneys filter blood to remove waste products and excess water, producing urine as a byproduct.

Question 5

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

Accepted Answer

Left ventricle

Answer

The left ventricle has the thickest walls and pumps oxygenated blood through the aorta to the systemic circulation.

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