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Maintenance Physiological Process
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The Heart
The Heart
Your heart is really a muscle. It's located a little to the left of the middle of your chest, and it's about the size of your fist.
How does the heart beat? Before each beat, your heart fills with blood. Then its muscle contracts to squirt the blood along. When the heart contracts, it squeezes — try squeezing your hand into a fist.
Maintenance Physiological Process:
The heart sends blood around your body. The blood provides your body with the oxygen and nutrients it needs. It also carries away waste.
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Circulation
What is the circulatory
systems job?
Veins and Vessels
Veins
Veins/Vessels
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The Circulatory system is responsible for transporting materials through the entire body and blood system.
It transports nutrients, water, and oxygen to your cells and carries away waste such as carbon dioxide that body cells produce.
Its basically a highway that travels through your entire body connecting all of your cells.
Red and White Blood Cells
1. Carry blood to the heart.
2. Have thin walls
3. Do not have a pulse
4. Near surface of the skin
5. Have valves to stop back-flow of blood.
6. Veins branch at their beginnings into tiny venules which join capillaries.
Blood Vessels
.
Red and white blood cells have a range of functions and a full blood count is the one of the most frequently requested routine tests to aid diagnosis.
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a tubular strusture carrying blood through the tissues and organs
Red Blood Cells:
What are the main parts of the system?
they are responsible for carrying oxygen and carbon dioxide. They pick up oxygen in the lugs and transport them to body cells.
- The Heart
- Blood
- Blood Vessels and Veins
White Blood Cells:
they help the body fight off germs. White Blood Cells attack and destroy germs when they enter the body.