Unit 8 Science Systems

Match it! Select the correct answer from the pull down...Good luck!

______________ nodes may swell when we have an infection in our body.

Oxygen is carried through the body in our ___________.

_____________ is a virus that attacks our immune system.

Our windpipe is known as the _______________.

The __________ is the largest artery in the body.

In normal conditions we have _______ kidneys.

___________ in the heart keep the blood moving in one direction.

A __________ is designed to prevent us from getting a virus.