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Backflow

Backflow

The reversal of the normal flow of a current.

See: regurgitation.


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How does the lymph move?

It doesn't circulate, it's a one-way drainage system. There doesn't seem to be a direct movement mechanism, but the vessels have anti-backflow valves and tend to move through tissues that squeeze them (veins have a similar mechanism), promoting flow from the drained tissues to the veins that ...

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by Darby
Sat Nov 28, 2009 4:18 am
 
Forum: Human Biology
Topic: How does the lymph move?
Replies: 4
Views: 4403

Re: Artery vs Vein

... limbs back to heart through the inferior vena cava is aginst gravitational pull. thats why vena cava, veins all have semi lunar valve to prevent backflow of blood.

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by chanhankiang
Fri Oct 17, 2008 8:01 am
 
Forum: Human Biology
Topic: Artery vs Vein
Replies: 11
Views: 38956

back flow of blood

Hello, Well all the comments are very true, but if you want to see why we dont want backflow we think about why we have it going one way. Vertebrates such as the mammals have a 4 chambered heart which efficiently keeps the oxegenated blood separate from the oxygenated ...

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by nugget
Tue Nov 14, 2006 7:42 am
 
Forum: General Discussion
Topic: back flow of blood
Replies: 8
Views: 4409

Veins and Arteries Vs. Capillaries

Do veins have valves on the inside to prevent backflow?

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by Anonymous
Wed Nov 23, 2005 5:04 pm
 
Forum: Physiology
Topic: Veins and Arteries Vs. Capillaries
Replies: 11
Views: 15201

blood vessels

... finally the blood ends up in the vena cava where the blood has lost most of its pressure. That's why there are valves in veins - to prevent the backflow of blood!!.. because, among other reasons, the blood has little pressure. Also, the blood from the vena cava ends up in the heart. The heart ...

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by zenith_beth
Fri Nov 18, 2005 5:20 pm
 
Forum: Human Biology
Topic: blood vessels
Replies: 18
Views: 8131


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