CNA Anatomy and Physiology Basics 2

Question 1

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

Accepted Answer

Left ventricle

Answer

The left ventricle pumps oxygenated blood through the aorta to the entire body. The right ventricle sends deoxygenated blood to the lungs via the pulmonary artery.

Question 2

What is the primary function of the respiratory system?

Accepted Answer

Exchange oxygen and carbon dioxide between the body and the environment

Answer

The respiratory system's main job is gas exchange: bringing oxygen into the body through inhalation and expelling carbon dioxide through exhalation.

Question 3

Which organ is responsible for filtering waste products from the blood and producing urine?

Accepted Answer

Kidney

Answer

The kidneys filter blood, remove waste products and excess water, and produce urine, which travels to the bladder for storage and elimination.

Question 4

What type of muscle tissue is found in the walls of the heart?

Accepted Answer

Cardiac muscle

Answer

The heart is made of cardiac muscle, which is involuntary (works automatically without conscious control) and striated in appearance.

Question 5

Which part of the nervous system controls involuntary functions such as heart rate and digestion?

Accepted Answer

Autonomic nervous system

Answer

The autonomic nervous system controls involuntary body functions like heart rate, breathing, digestion, and blood pressure without conscious effort.

CNA Practice Test

CNA Practice Test

CNA Anatomy and Physiology Basics 2