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5 Cards in this Set
- Front
- Back
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Atrium |
The atria contract and force blood into the ventricles. |
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Ventricles |
Ventricles contract and force blood out of the heart. |
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Valves |
Valves in the heart ensure that blood flows in the correct direction. |
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Arteries |
Blood flows FROM (Away) heart TO organs.
Because the blood from the heart is of high pressure, arteries have; -thick outer walls -thick layers of muscles |
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Veins |
Blood flows FROM organs, to Veins. The blood in the veins is low pressure. |
