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Constriction

Constriction

The act of constricting.


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Re: veins (alevel help!)

Veins have no smooth muscle to produce a constriction - it's possible that the constriction produced by surrounding tissues (such as skeletal muscles or dermal tightening) that is a good point you brought to our notice i just missed that It's ...

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by Dibear
Mon Jun 14, 2010 5:55 pm
 
Forum: Physiology
Topic: veins (alevel help!)
Replies: 7
Views: 11646

Re: veins (alevel help!)

... a lot of more smooth muscle cells than if you need to constrict a vessel with a BP of 10 mm Hg. If you doubt these words, try searching for "constriction of veins" or something on google. Or just read your histology and physiology books.

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by Swede
Tue Feb 23, 2010 9:50 pm
 
Forum: Physiology
Topic: veins (alevel help!)
Replies: 7
Views: 11646

Re: veins (alevel help!)

Veins have no smooth muscle to produce a constriction - it's possible that the constriction produced by surrounding tissues (such as skeletal muscles or dermal tightening) that is a good point you brought to our notice i just missed that

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by jwalin
Tue Feb 23, 2010 4:09 pm
 
Forum: Physiology
Topic: veins (alevel help!)
Replies: 7
Views: 11646

veins (alevel help!)

Venoconstriction is a physiologcal mechanism that exists. Interesting how your teacher isn't aware of this. The majority of your blood exists in your vein system. Sympaticus innervate these vessels and give constriction of them. ...

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by Swede
Mon Feb 22, 2010 10:54 pm
 
Forum: Physiology
Topic: veins (alevel help!)
Replies: 7
Views: 11646

Dilation or Constriction

It triggers the constriction. For example when you're wounded and you start losing blood, renal afferent artery constricts and you stop losing more water from your body.

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by miloshic
Wed Sep 02, 2009 9:29 am
 
Forum: Physiology
Topic: Dilation or Constriction
Replies: 3
Views: 7145
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