1

Understanding the HeartBy: Nava Behnam and

Lauren Emanuel

2

Did You Know?

In an average lifetime, your heart pumps about 100,000,000 gallons of blood.

In one day, your heart beats more than 100,000 times and pumps more than 4,300 gallons of blood.

For more interesting facts, go to: http://facts.randomhistory.com/human-heart-facts.html

3

Function of the Heart

Functions like a pump to send oxygen-rich blood through all parts of your body.

3

Blood contains oxygen and nutrients that every cell in your body needs to survive.

Carbon-Dioxide

Oxygen

4

Overview of Circulatory Systems

4

Fish Amphibians Mammals

5

Amphibians• Double circulatory system, but

the heart is not always completely separated into two pumps.

Three chambered heart

6

Fish

The two-chambered heart pumps blood to the gills.

From there, it pumps the blood to the rest of the body.