Front

What is the main function of the heart?

Back

The heart pumps blood throughout the body, supplying oxygen and nutrients.

Front

What substance does blood carry to the body's cells?

Back

Oxygen.

Front

What happens to your heart rate when you exercise?

Back

Your heart rate increases.

Front

What is a muscle that helps you lift weights?

Back

Bicep muscle.

Front

What happens to your bicep muscle when you lift something heavy?

Back

It contracts.

Front

Which part of the digestive system absorbs nutrients?

Back

Intestine.

Front

What happens to your breathing rate after you run?

Back

It decreases.

Front

What is the role of the lungs in the body?

Back

The lungs help you breathe in oxygen and breathe out carbon dioxide.

Front

What is the function of the stomach?

Back

The stomach breaks down food.

Front

What do we call the system that includes the heart and blood vessels?

Back

Circulatory system.