1. The Circulatory System 123rf.com

2. Where is your heart located? Many people think their heart is located on the left side of their chest. It is actually located almost in the center of the chest, between the lungs. It’s tipped slightly so that part of it sticks out and taps against the left side of the chest, which is what makes it seem as though it is located there. shadygroveadventisthospital.com

3. How big is the human heart? my2ndheartbeat.wordpress.com About the size of your fist.

4. Whoa….my heart beats how many times??? http://my2ndheartbeat.wordpress.com/2011/09/15/daily-insight-36/ One day: 100,000 beats One year: 35 million beats Lifetime: > 2.5 billion beats

5. Your heart is one hard working muscle! The force you use to squeeze a tennis ball is about the same amount of force your heart uses to pump blood out to the body. Even at rest, the muscles of the heart work hard- twice as hard as the leg muscles of a person sprinting. bodyroxleduc.ca

6. Time to take our pulse sciencebuddies.org As a kid, your resting pulse should be between 70-110 beats per minute.

7. The circulatory system is a body system that includes the ________________, _________________________________________, and _________________. The Circulatory System heart blood vesselsblood deskarati.com

8. THE HEART: The heart is a _________________, muscular organ. Its main function is to ______________ ______________________ throughout the body. The human heart contains four chambers: 1) __________________________________________ 2) __________________________________________ 3) __________________________________________ 4) __________________________________________ hollow pumpblood right atrium right ventricle left atrium left ventricle

9. inspirations786.wordpress.com

10. THE BLOOD VESSELS: Blood vessels are ___________ in the body through which blood _______________. _______________________________: a type of blood vessel that carries blood away from the heart. _______________________________: a type of blood vessel that carries blood to the heart. tubesflows Arteries Veins

11. BLOOD: White blood cells _________________ infection and kill germs. Red blood cells deliver ___________________ from the lungs to the rest of the body and transport carbon dioxide from the body to the lungs. Platelets are small blood cells that help blood to _______________, or stop bleeding. fight oxygen clot

12. Circulatory System Video Links http://www.pbs.org/wgbh/nova/body/map-human-heart.html http://www.sciencekids.co.nz/videos/humanbody/heart.html MovieSource: The Circulatory System Circulatory System - Kids Science Videos, Games and Lessons that Make Learning Fun and Easy http://studyjams.scholastic.com/studyjams/jams/science/human- body/circulatory-system.htm