Cardiovascular System

Front

What do arteries carry away from the heart?

Back

Oxygen-rich blood.

Front

What is the main organ of the circulatory system?

Back

Heart.

Front

Which of the following is NOT a function of the circulatory system?

Back

Break down carbohydrates into glucose.

Front

What is the approximate size and shape of the heart?

Back

About the size and shape of a fist.

Front

What are the smallest blood vessels called?

Back

Capillaries.

Front

What do veins carry back to the heart?

Back

Oxygen-poor blood.

Front

What is the function of the heart?

Back

To pump blood throughout the body.

Front

What is the role of capillaries in the circulatory system?

Back

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

Front

What is plasma?

Back

The liquid component of blood that carries cells, nutrients, hormones, and waste.

Front

What are platelets?

Back

Cell fragments that help in blood clotting.