1. The Cardiovascular System
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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?
About the size of your fist.
my2ndheartbeat.wordpress.com

4. Whoa….my heart beats how many times???
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
As a kid, your resting pulse should be between beats per minute.
sciencebuddies.org

7. The Cardiovascular System
heart
The circulatory system is a body system that includes the ________________,
___________________, and _________________________________.
blood
blood vessels
food
oxygen
Its main job is to transport _______________ and _________________ to cells
in the body. It also picks up _______________ to be eliminated from the body.
wastes
deskarati.com

8. hollow pump blood right atrium right ventricle left atrium
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) __________________________________________
___________________: open and close to allow blood to flow in only one direction through the heart.
hollow
pump
blood
right atrium
right ventricle
left atrium
left ventricle
Valves

9. inspirations786.wordpress.com

10. tubes flows Arteries Veins Capillaries 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.
______________________________: the smallest kind of blood vessel through which materials are exchanged between blood and body cells.
tubes
flows
Arteries
Veins
Capillaries

11. fight oxygen clot Plasma 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.
_________________ is a straw colored liquid component of blood that normally holds the blood cells. It makes up about 55% of the body's total blood volume.
fight
oxygen
clot
Plasma

12. Circulatory System Video Links
MovieSource: The Circulatory System
Circulatory System - Kids Science Videos, Games and Lessons that Make Learning Fun and Easy