Transcript Circulatory System

Human Body Systems
Circulatory System
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What does this body system do for us?
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Transport oxygen to all of our cells
Transport carbon dioxide away to lungs
Transport nutrients to all cells
Transport waste materials away
Distribute our immunity cells/molecules
Distribute our blood clotting agents
Distribute hormones about our body
Help in thermoregulation – distributing heat
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The Mammalian Heart
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Blood Pressure
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Blood Pressure
• The pressure the blood exerts on the walls
of the blood vessels
• The heart is a pump and creates this
pressure
• The blood vessels contain muscle and
elastic tissue and may constrict and dilate
which is a factor
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Blood vessels
Three major types:
1. Arteries
2. Capillaries
3. veins
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Arteries:
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Capillaries
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Veins:
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Blood
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