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11 Cards in this Set
- Front
- Back
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cardiovascular system
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circulatory system
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heart
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organ that pumps blood through the body
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atrium
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one of the two upper chambers of the heart, they receive the blood coming into the heart
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ventricle
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one of the two lower chambers of the heart, they pump the blood out of the heart
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valve
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flap of tissue that prevents blood from flowing backward, located between the ventricles and the large blood velssels that carry blood away from the heart
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pacemaker
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group of cells, located in the right atrium that send out signals that make the heart muscle contract. Constantly receives messages about the body's oxygen needs
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arteries
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blood vessels that carry blood away from the heart
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capillaries
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tiny vessels where substances are exchanged between the body and blood
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veins
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vessels that carry blood back to the heart
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aorta
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largest artery in the body, carries blood from the left ventricle to the body
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force
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a push or a pull
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