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Vasoconstriction

vasoconstriction

The diminution of the calibre of vessels, especially constriction of arterioles leading to decreased blood flow to a part.


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some bloody questions

... body can compensate by releasing ……………….. which act(s) on the …………………to restore the correct level of perfusion. 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: 2730

Can Systolic BP ever be less than Diastolic?

... the diastolic then the blood wouldn't leave the heart and the heart would fail. You can have localized diastolic pressure being higher (such as vasoconstriction) but don't let your lecturer confuse you.

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by daniel.kurz
Thu Oct 24, 2013 7:39 pm
 
Forum: Human Biology
Topic: Can Systolic BP ever be less than Diastolic?
Replies: 5
Views: 4400

Re: please help! understanding resistance: decreasing or increas

I'm not exactly sure, but I think the question is whether all the factors in combination (vasoconstriction/dilation, viscosity, vessel cross sectional area, length, ect.) function to decrease or increase the velocity of the blood. Velocity varies inversely with pressure ...

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by pulle998
Tue Sep 22, 2009 4:02 am
 
Forum: Physiology
Topic: please help! understanding resistance: decreasing or increas
Replies: 1
Views: 2951

please help! understanding resistance: decreasing or increas

... to flow..(because of this reason, i understand why there is a drop in MAP in the arterioles) 2. but i found in the other part, that the arteries vasoconstriction ( which means that the vessels radius is becoming smaller) will elevate the MAP.. i am quiet confuse understanding this contradictions ...

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by sohel2009
Sun Sep 20, 2009 7:13 am
 
Forum: Physiology
Topic: please help! understanding resistance: decreasing or increas
Replies: 1
Views: 2951

SAC thermoregulation

... responds to really cold and really hot environments. So far I've done a bit of researching and reading on the topic and found little things like: vasoconstriction or vasodilation of arterioles and capillaries. However, does anyone know if there is more that I can do? How can I prepare for this ...

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by Joker
Mon Apr 27, 2009 3:36 pm
 
Forum: Cell Biology
Topic: SAC thermoregulation
Replies: 0
Views: 2461
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