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Veins

veins

The vessels carrying blood toward the heart.


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Blue Blood For A Science Project

... along the way, people began thinking that there was blue blood because of the combination of the anatomical drawings and the blue color of the veins below our skin. I even understand that they inject blue latex into cadaver's arteries. I'm sure this may also perpetuate the myth. It reminds ...

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by ojomikse
Thu Sep 27, 2012 12:34 pm
 
Forum: Human Biology
Topic: Blue Blood For A Science Project
Replies: 13
Views: 5856

why veins have a thicker layer of fibrous tissue ?

why veins have a thicker layer of fibrous tissue than arteries? Thanks for your help!

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by bryanwong
Mon Dec 26, 2011 10:12 am
 
Forum: General Discussion
Topic: why veins have a thicker layer of fibrous tissue ?
Replies: 0
Views: 977

Re: pressure and velocity in blood vessels

... rate of blood flow decreases when pressure drops so why the pressure drops while the velocity increases when the blood reaches the venules and the veins ?

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by bryanwong
Fri Dec 23, 2011 7:26 am
 
Forum: Human Biology
Topic: pressure and velocity in blood vessels
Replies: 2
Views: 3680

pressure and velocity in blood vessels

... friction of the capillary wall." However,later it says "The velocity of blood rises slowly again later since the cross sectional area of veins is smaller than capillaries." Why does't the friction of the capillary wall slows down the blood flow? Also, can someone tell me the relationship ...

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by bryanwong
Fri Dec 23, 2011 6:39 am
 
Forum: Human Biology
Topic: pressure and velocity in blood vessels
Replies: 2
Views: 3680

Blood is always red, never blue.

I have never heard of blood being blue. My biology teacher always said that blood color is red, although it's true that veins are blue, but then again veins are not the blood itself.

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by clarisse
Sat Oct 22, 2011 2:26 am
 
Forum: Human Biology
Topic: Blood is always red, never blue.
Replies: 57
Views: 374588
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