1. Circulatory
The
System

2. Circulatory System
The Circulatory System transports oxygen and nutrients throughout the entire body and carries away carbon dioxide and waste materials.
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3. Your heart is a muscle that pumps blood throughout your body
Your heart is a muscle that pumps blood throughout your body. It is made of muscle.
It is located to the left of the middle of your chest and is about the size of your fist and the weight of an apple.
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4. The heart can pump blood because it is made of cardiac muscle
The heart can pump blood because it is made of cardiac muscle. Muscle tissue works by contracting (squeezing) as the heart pumps blood and relaxing as the heart reloads blood.
One complete sequence of contraction and relaxation is called a heartbeat.
Occurs approximately every second

5. One complete sequence of contraction and relaxation is called a heartbeat.
Occurs approximately every second
When you exercise your body needs more oxygen-filled blood. Your heart pumps faster to supply the blood your heart needs.

6. Structures: Heart Blood Blood Vessels Veins Blood Arteries Heart
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7. The Human Heart
The heart is divided into four different parts known as chambers.
Atrium -The upper chambers (blood enters and exits the heart)
Ventricle -The lower chambers (pumps blood to the body and lungs)

8. Blood – Humans have 5 liters of blood in their body
Composed of:
Red blood cells
White blood cells
Platelets
Plasma

10. Red Blood Cells most numerous blood cells Red/Disk shaped
Made in bone marrow
Transport oxygen
Give blood it’s color
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11. White Blood Cells Larger than red blood cells
Guard against infection and attack bacteria
Number of WBC’s increases when body is fighting infections

12. Platelets Pieces of blood cells that float in blood
Clump together to form sticky clots to repair blood vessels

13. Plasma
Liquid part of blood
mostly water

16. Blood Vessels
Blood moves through the circulatory system in three types of blood vessels:
Arteries: Large vessels that carry oxygen rich blood away from the heart .
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17. Veins: Carry oxygen- poor blood from the body towards the heart

18. Capillaries: smallest vessels that branch off the main vessels and link the arteries to veins.

20. Blood Types There are four different blood types: A, B, AB, and O
A certain protein on the outside of the red blood cell determines a person’s blood type

22. You must be at least 17 to donate blood or 16 with parent permission
When blood is donated from one individual to another this is known as a transfusion.
Blood transfusions are done to replace blood lost during surgery, serious injury, or if a person’s body can't make blood properly because of an illness.
Mixing blood of certain types can cause problems to occur in the blood. This could result in clumping and death.
You must be at least 17 to donate blood or 16 with parent permission

23. People with TYPE O blood are called Universal Donors, because they can give blood to any blood type.
People with TYPE AB blood are called Universal Recipients, because they can receive any blood type.

25. Heart Attack
When blood can't get to your heart, your heart muscle doesn't get the oxygen it needs And cells can be damaged or die.

26. This can be caused by cholesterol and a fatty material called plaque can build up on the walls inside blood vessels that take blood to your heart.

28. Stroke
blood flow to an area of the brain is cut off, brain cells are deprived of oxygen and begin to die.
abilities controlled by that area of the brain such as memory and muscle control are lost.

29. Leukemia An abnormal rise in the number of white blood cells.
They crowd out red blood cells and platelets.
Despite their vast numbers, these leukemia cells are unable to fight infection the way normal white blood cells do.

30. Videos Bill Nye Blood and Circulation
What is Blood? AmericanBlood.org 2:23
How your Heart Works Kids Health
How the Heart Works 3D Video.flv 2:56
Types of Blood Vessels eMedTV 1:09
Schoolhouse Rock: Do the Circulation
The Heart Mr. Parr 2:40
Circulatory Song Mr. Parr 3:19