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Capillaries

Capillaries

(Science: anatomy) The smallest vessels which contain oxygenated blood. The capillaries, allowing red blood cells to travel in single file, are responsible for delivering oxygen to the tissues on a cellular level.


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Diffusion and concentration gradient

... different for several types of molecules in the SAME environment. I don't get that... For example, in the alveoli, dioxygen molecules get into the capillaries because O2 concentration is lower there. However, CO2 concentration is very high in the capillaries. So how do the O2 molecules "know" ...

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by Aymeric
Sun Dec 15, 2013 1:02 am
 
Forum: General Discussion
Topic: Diffusion and concentration gradient
Replies: 7
Views: 5657

some bloody questions

... ATP / oxygen / protein / glucose Vasoconstriction / Atherosclerosis / Ischaemia Vasodilators / endothelin / glyceryl trinitrate Arterioles / capillaries / arteries i need help plz

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by zak
Mon Nov 25, 2013 3:02 pm
 
Forum: Human Biology
Topic: some bloody questions
Replies: 4
Views: 2898

Muscle Fiber Types are FICTIONAL, or is it not?

... Muscle fibers will not look the same for sure (size, color, etc), because of their different capacity of motor neurons, mitochondria and capillaries, etc. But does this give a right to separate muscle fibers into types? As we know: If muscle is stimulated in particular way (growth or ...

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by GPiklaov
Thu May 16, 2013 2:31 pm
 
Forum: Human Biology
Topic: Muscle Fiber Types are FICTIONAL, or is it not?
Replies: 0
Views: 2241

Is the renal medulla lighter in color?

... is darker in color...the cortex can be identified by its paler color... I think the cortex should be darker in color since the majority of the capillaries is in the cortex(or is it?), but I can't be sure... :? Please help! Thanks! :)

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by johntdlemon
Sun Nov 25, 2012 3:33 am
 
Forum: Human Biology
Topic: Is the renal medulla lighter in color?
Replies: 1
Views: 3014

Re:

... it), with this they lose their DNA. They do this to make more room for carrying oxygen and also making them flexible enough to pass through tight capillaries. Red cells don't replicate either, they are formed from stem cells in the bone marrow and differentiate into red blood cells, going through ...

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by IceIcebaby
Thu May 17, 2012 1:05 pm
 
Forum: Genetics
Topic: DNA analysis
Replies: 21
Views: 16641
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