Respiratory and Circulatory Systems

The most important organ of the circulatory system is the

• heart

• lungs

• foot

The most important organ of the respiratory system is the

• heart

• lungs

• finger

The heart has how many chambers?

• 1

• 2

• 3

• 4

Your heart pumps

• water

• blood

• soda

Blood travels through your

• blood vessels

• skin

• tubes

As blood flows through your body, it travels in _____ direction

• 3

• 2

• 1

The respiratory system helps us

• digest food

• pump blood

• breathe

The main organ in the respiratory system is the

• Lungs

• Heart

• Brain

We have ___ lungs

• 1

• 2

• 3

The left lung is a little bit smaller to make room for the

• heart

• veins

• brain