1. The Heart
Your heart is about the same size as your fist. An adult’s heart is about two fists.
An average adult body contains about five quarts of blood.
All the blood vessels in the body joined end to end would stretch 62,000 miles or two and a half times around the earth.
The heart circulates the body's blood supply about 1,000 times each day.
The heart pumps the equivalent of 5,000 to 6,000 quarts of blood each day.

3. http://www.kscience.co.uk/animations/hea rt.swf

4. Blood flow in the Heart Blood from the body flows:
Deoxygenated blood enters the heart through the superior and inferior vena cava,
then flows into the right atrium
Goes through the tricuspid valve
to the right ventricle
Gets pumped through the pulmonary valve
to the pulmonary artery
to the lungs

5. The blood picks up oxygen in the lungs, and then flows from the lungs:
Through the pulmonary veins
Into the left atrium
Flows through the mitral valve
Into the left ventricle
Flows through the aortic valve
Into the aorta and pumped to the body

6. Fill in worksheet during the next two videos/ websites
out.htm interactive model
x/library/resources/HA2_VC.wmv disection

7. Webquest- let’s go to the computer room