Dictionary » V » Vasodilation



The increase in the internal diameter of a blood vessel that results from relaxation of smooth muscle within the wall of the vessel. This causes an increase in blood flow, but a decrease in systemic vascular resistance.

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Homeostasis in Humans

... the skin and other parts of the body (e.g. mucous membranes). Based on these signals it promotes either heat retention or heat loss (by means of vasodilation, sweating, shivering etc. according to what is needed).

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by biohazard
Mon Jan 09, 2012 6:55 am
Forum: Human Biology
Topic: Homeostasis in Humans
Replies: 1
Views: 3000

Re: Brain function

... of the nerve impulses from a sensory ending to the effector organ along divisions of the nerve fibre without traversing a synapse, Example,the vasodilation is resulting from the irritation of the conjunctiva; the reaction occurs even when the nerve fibre has been sectioned and thus isolated ...

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by beautiful
Mon Oct 04, 2010 10:09 am
Forum: Physiology
Topic: Brain function
Replies: 1
Views: 3813

Re: Headaches

... think you are more interested in the mechanisms rather than the cause certain parts of dura and lepto meninges when stimulated give rise to pain. vasodilation givesd rise to the pain as you figured out but pain comesz not from the dilation but by the pressure exerted by the walls. that sort of ...

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by jwalin
Tue Nov 24, 2009 12:25 pm
Forum: General Discussion
Topic: Headaches
Replies: 10
Views: 3824

SAC thermoregulation

... 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 oncoming SAC? What ...

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by Joker
Mon Apr 27, 2009 3:36 pm
Forum: Cell Biology
Topic: SAC thermoregulation
Replies: 0
Views: 2631

Heart Rate and Breathing Rate

... Also, the production of ATP produces heat. In order to maintain homeostasis, your body has mechanisms to get rid of the heat, sweating, vasodilation, etc.

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by supaumar
Fri Apr 03, 2009 12:56 am
Forum: Human Biology
Topic: Heart Rate and Breathing Rate
Replies: 3
Views: 27777
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