Front

What is the primary organ of the circulatory system?

Back

Heart

Front

What is the function of the right atrium?

Back

Receives deoxygenated blood from the body.

Front

What is the function of the left ventricle?

Back

Pumps oxygenated blood to the body.

Front

What is the function of the right ventricle?

Back

Pumps deoxygenated blood to the lungs.

Front

What is the nasal cavity?

Back

The space behind the nose that filters, warms, and moistens air.

Front

What are arteries?

Back

Blood vessels that carry oxygenated blood away from the heart.

Front

What are veins?

Back

Blood vessels that carry deoxygenated blood back to the heart.

Front

What is the diaphragm?

Back

A muscle that helps in breathing by contracting and relaxing.

Front

What is gas exchange?

Back

The process of oxygen entering the blood and carbon dioxide leaving the blood.

Front

What is the role of the lungs in the respiratory system?

Back

To facilitate gas exchange between the air and blood.