Nutrition 3A

This organ pumps your blood.

This organ is part of your digestive system.

The nervous system includes the

Our two ___ help clean our blood.

Our two ___ take in air when we breathe.

A lot of cells that work together to do the same thing is called

• blood

• tissue

• microscope

• health

What is the smallest part of us?

• cells

• tissue

• organ

• skin

The term cardio refers to the ___.

• kidneys

• brain

• heart

• liver

Why are cells called microscopic?

True or False: Your skin is waterproof.

• true

• false