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35 Cards in this Set
- Front
- Back
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Main task of circulatory system
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Transport materials through body.
Delivers food and oxygen Carries away carbon dioxide and other wastes |
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What does food combine with to produce usable energy
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Oxygen
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Waste product produced by cells and carried away by blood
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Carbon Dioxide
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How much blood does the heart pump each day?
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7600 liters or 2000 gallons
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What muscle rests only between beats?
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Heart
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How much blood is pumped through the heart each minute
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5 liters
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How big is the heart and where is it located?
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As big a a fist
Located slightly left of center of the chest |
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Where is the pacemaker of the heart located?
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Upper right side of heart
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What does the pacemaker do and what controls it?
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Pacemaker sends signals to heart muscle causing it to contract - it is controlled by nerve tissue in the heart
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What is controlled by the pacemaker?
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Heart beat and rhythm
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How many pumps are in the heart?
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2
One on right and one on left |
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What is the thick wall of tissue that separates teh heart into a right and left side?
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Septum
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How many chambers are in each side of the heart?
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2
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Where does circulation begin in the heart?
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Upper right chamber called the atrium
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"Oxygen poor blood" is filled with what waste?
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Carbon dioxide
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From the right atrium, blood flows down into what chamber?
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Right ventricle
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Are the atria or venticles the pumping chambers?
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Ventricles
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The right ventricle pumps blood where?
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The lungs
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In the lungs, what is removed from the blood and what is picked up?
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Carbon dioxide removed
Oxygen picked up |
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After the lungs, where does the blood go?
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Left atrium
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After the left atrium, blood flows down into what chamber?
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Left ventricle
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What chamber is the main pump for blood to the body?
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Left ventricle
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Is blood pumped AWAY from the heart oxygen rich or poor?
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Oxygen rich
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Is blood returned to the heart from the body oxygen rich or poor
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Oxygen poor
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What vessels are the "pipelines from the heart"?
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Arteries
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Largest blood vessel in the body
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Aorta
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What heart chamber pumps blood into the aorta
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Left ventricle
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What organ in the body is the primary destination for blood flow?
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The brain
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What vessels are the "unseen pipelines"
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Capillaries
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What are the extemely thin-walled vessels that are only big enough for 1 red blood cell to pass through?
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Capillaries
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Why are capillaries so small?
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Allow the movement of oxygen, food and waste materials to pass through the capillary wall
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What vessels are the "pipelines TO the heart"
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Veins
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Blood trickles from the capillaries into what vessels?
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Veins
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Are veins or capillaries bigger?
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Arteries - biggest and thickest
Veins - medium, thin walls Capillaries - tiny, thinnest walls |
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Why doesn't blood flow backward in veins?
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Tiny one-way valves keep blood moving toward heart
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