Excretory System

What is organ is #1?

• Kidney

• Stomach

• Bladder

• Heart

What organ is #3?

• Kidney

• Stomach

• Bladder

• Heart

What is the main function of the excretory system?

• to bring oxygen into the body and get rid of carbon dioxide

• To rid the body of wastes

• to pump blood

• to digest food

How many kidneys do you have?

• 1
• 3
• 5
• 2

True or False:

Kidneys filter waste from blood.

• True

• False

How many chambers does the heart have?

• 1

• 2

• 3

• 4

What is the main organ of our circulatory system?

• heart

• lungs

• skin

• liver

When we breathe in, our bodies use _________ to live.

• carbon monoxide

• carbon dioxide

• nitrogen

• oxygen

We breathe out ________ when we exhale.

• carbon monoxide

• carbon dioxide

• helium

• oxygen

Which are the main organs in the respiratory system?

• Heart

• Stomach

• Lungs

• Nose