What flows through the body?--"Blood."

Where does the blood flow from?--"The heart."

When does the blood flow from the heart?--"Every time the heart beats."

Show with your hand how the heart beats.

When does the heart beat?--"All the time."

What happens when the heart stops beating?--"We die."

What do you see on the back of your hand, beneath the skin?--"Veins"

What is in the veins?--"Bad blood."

What are the veins?--"Pipes for the bad blood to pass through."

Where do the veins carry the bad blood?--"To the heart."

Where does the heart send the bad blood?--"To the lungs."

What happens to the bad blood when in the lungs?--"It is made pure."

What makes the bad blood pure?--"The air."

How does the air get into the lungs?--"Through my nose, mouth, and
windpipe."