Dictionary » D » Dilate



1. To grow wide; to expand; to swell or extend in all directions. His heart dilates and glories in his strength. (Addison)

2. To speak largely and copiously; to dwell in narration; to enlarge; with on or upon. But still on their ancient joys dilate. (Crabbe)

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Thermal insulation by adipose tissue

... low blood flow amounts to lesser heat loss. In order to reverse this in hot environments, the surface blood vessels and capillaries of the skin dilate, facilitating better heat loss (coupled with sweating). The function of most organs in mammals is severely compromised if the deep body temperature ...

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by biohazard
Thu Jan 26, 2012 10:29 am
Forum: Physiology
Topic: Thermal insulation by adipose tissue
Replies: 6
Views: 10620

The Heart

... should slow along with all metabolic processes since it's these that generate the majority of our heat. However the peripheral blood vessels all dilate to let blood closer to the surface to cool us off (hence we go red in the face when we're overheating). This lowers blood pressure and means ...

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by Babybel56
Sun Apr 24, 2011 8:31 am
Forum: Human Biology
Topic: The Heart
Replies: 6
Views: 11649

Can control of "Involuntary" functions be harmful?

I doubt it is dangerous, after all there are many drugs routinely used in medicine that dilate or contract the iris, letting in too much or too little light to the eye. The only symptom usually is the temporary loss of acute vision as long as the pupil size is not optimal. ...

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by biohazard
Thu Dec 17, 2009 11:19 am
Forum: General Discussion
Topic: Can control of "Involuntary" functions be harmful?
Replies: 5
Views: 8313

Dilation or Constriction

We have different kinds of receptors in our vessel cells. Some might constrict like digestive and some might dilate like muscle vessels. But the work of kidney is not only filtering blood. It's other function is to regulate blood pressure. So I think it would dilate because of ...

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by behzad
Mon Aug 10, 2009 8:29 am
Forum: Physiology
Topic: Dilation or Constriction
Replies: 3
Views: 7695

Re: I am The Intelligent Designer, but I don't think I exist

As the heart beats faster, the blood pressure goes down. And while rigorous activity like running, blood vessels dilate so I don't believe that more pressure is needed, but just a more constant supply of oxygenated is, as provided by the increased heart rate. But that's just my ...

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by mith
Fri Dec 29, 2006 7:22 pm
Forum: Physiology
Topic: Marey's Law
Replies: 9
Views: 24426
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