Cardiovascular System

Front

What is the purpose of a valve in the heart?

Back

To keep the blood flowing in one direction.

Front

What organ pumps blood throughout the body?

Back

Heart.

Front

What creates the 'lub-dub' sound that the heart makes?

Back

Closing of the heart valves.

Front

What do veins do?

Back

Carry blood towards the heart.

Front

What are the smallest blood vessels?

Back

Capillaries.

Front

What is the main function of the heart?

Back

To pump blood throughout the body.

Front

What are arteries?

Back

Blood vessels that carry blood away from the heart.

Front

What is the role of capillaries?

Back

To facilitate the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

Front

What is the difference between veins and arteries?

Back

Veins carry blood towards the heart, while arteries carry blood away from the heart.

Front

What is blood made of?

Back

Red blood cells, white blood cells, platelets, and plasma.