Circulatory and Respiratory Systems

Front

Arteries carry blood _____________.

Back

away from the heart.

Front

Veins carry blood _____________.

Back

back to the heart.

Front

What is the main organ in the circulatory system?

Back

heart.

Front

As your physical activity ____________, your heart rate ___________ and your breathing rate _______________.

Back

increases, increases, increases.

Front

The trachea is also known as _____________.

Back

the windpipe.

Front

Which of these is NOT part of the respiratory system?

Back

artery.

Front

What is the function of the heart?

Back

To pump blood throughout the body.

Front

What are the two main types of blood vessels?

Back

Arteries and veins.

Front

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

Back

To exchange oxygen and carbon dioxide.

Front

What muscle helps in breathing?

Back

Diaphragm.