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CIRCULATION
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Uploaded on Oct 18, 2007
The circulatory system consisting of the heart, arteries, capillaries, and veins, is the pumping mechanism that transports blood throughout the body.
In the heart, the left ventricle contracts, pushing red blood cells into the aorta, the body's largest artery.
From here, blood moves through a series of increasingly smaller arteries, until it reaches a capillary, the junction between arteries and veins.
Here oxygen molecules detach from the red blood cells and slip across the capillary wall into body tissue.
Now de-oxygenated, blood begins its return to the heart.
It passes through increasingly larger veins to eventually reach the right atrium.
It enters the right ventricle, which pumps it through the pulmonary arteries into the lungs, to pick up more oxygen.
Oxygenated, blood reenters the left atrium, moves into the left ventricle, and the blood's journey begins again.
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Top Comments
husnain404 2 years ago
thumbs up if your here cause you have a test coming up
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Connor Kenway 1 year ago
whoa... i was soo distracted from the moving cells i have NO idea what he just said O.O
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Video Responses
All Comments (187)
Vishv Books 3 weeks ago
We are Vishv Books publishers of school textbooks. We request permission to use the video titled CIRCULATION on this URL, for educational purpose. We would incorporate the video in the digital support complementing our Science textbook for Class 5. This video will no doubt help the students understand the concept better.
We would use the appropriate citation to acknowledge your video.
Thank you for your consideration .
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madminder21 4 weeks ago
helps easy quick 100
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pusslover112 1 month ago
thanks helped me get an A on a test!
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Muddy A 3 months ago
SubhanAllah
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KylaKyla12Kyla 3 months ago
still confused -_-
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Ghaid Sa 3 months ago
This is good but way too fast
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shaikjaveed576 4 months ago
Superb
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SuperniusPL 5 months ago
Great, scientific video! I posted on supernius.pl
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siara705 6 months ago
it went like 3 seconds on my phone. o.o
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