the circulatory system

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definition of cardiovascular system?
the circulatory and respiratory system working together
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what are blood vessels?
arteries, capillaries, veins
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what is the first step to how the heart works as a muscular pump?
blood enters right atrium. at this point it is dark red with little oxygen but mainly waste products such as carbon dioxide.
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what is the second step to the heart?
the right atrium pumps the blood into the right ventricle, through the tricuspid valve
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what is the third step to the heart?
the right ventricle pumps the blood through the pulmonary artery to the lungs where oxygen is picked up and the carbon dioxide is deposited. this point blood changes to bright red because of the oxygen collected
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what is the 4th step to the heart?
from the lungs the blood returns to left atrium through the pulmonary vein
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what is the last step to the heart?
the left atrium pumps blood into left ventricle, then blood leaves here through aorta to be distributed to rest of body
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arteries?
thick walls and carry oxygenated blood at high pressure away from heart. they have no valves and their walls are more elastic than the walls of veins
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veins?
carry deoxygenated blood back to the heart, walls are thinner and less elastic than walls of arteries. veins have valves.
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capillaries?
microscopic vessels that allow carbon dioxide, oxygen and waste products to pass through
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Other cards in this set

Card 2

Front

what are blood vessels?

Back

arteries, capillaries, veins

Card 3

Front

what is the first step to how the heart works as a muscular pump?

Back

Preview of the front of card 3

Card 4

Front

what is the second step to the heart?

Back

Preview of the front of card 4

Card 5

Front

what is the third step to the heart?

Back

Preview of the front of card 5
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