Dictionary » V » Valve

Valve

valve

A device that controls the flow of a fluid through a pipe.

One shell of a double shelled mollusc such as a clam or oyster.

In botany terminology, a portion of an organ that has fragmented, of a capsule, the teeth like portions into which the dehiscing part of the pericarp splits at maturity.


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biology need help??

Which of the following are true of coronary bypass or heart valve surgery? a. The risk of having a stroke following angioplasty is approximately 2.5% that of CABG. b. The risk to life of heart valve replacement surgery typically exceeds that of CABG. c. ...

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by zak
Fri Jan 10, 2014 1:32 pm
 
Forum: Human Biology
Topic: biology need help??
Replies: 0
Views: 431

heart failure

... oxygen carrying capacity of the blood) b. An overactive thyroid gland (increases the metabolic demand by the tissues.) c. Stenosis of the mitral valve (causes damage to heart muscle.) d. Diabetes (is associated with weight gain ) e. Calcification of the tricuspid valve (reduces the left cardiac ...

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by zak
Fri Nov 22, 2013 6:44 pm
 
Forum: Human Biology
Topic: heart failure
Replies: 1
Views: 714

what causes us to breathe

... oxygen carrying capacity of the blood) b. An overactive thyroid gland (increases the metabolic demand by the tissues.) c. Stenosis of the mitral valve (causes damage to heart muscle.) d. Diabetes (is associated with weight gain ) e. Calcification of the tricuspid valve (reduces the left cardiac ...

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by zak
Thu Nov 21, 2013 10:20 am
 
Forum: Human Biology
Topic: what causes us to breathe
Replies: 23
Views: 10966

Re: Digestive System Evolution

The case of the Italian Wall Lizards offers clues about some bits of this puzzle. One aspect is the 30 year time span it took to develop a cecal valve when placed in a different environment -something that in their kind of animal, is rare. They developed different diet, dentition, jaws, skulls, ...

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by Crucible
Thu Oct 06, 2011 1:58 am
 
Forum: Evolution
Topic: Digestive System Evolution
Replies: 60
Views: 98213

Heart : Difference between tricuspid and bicuspid valves ?

Hi, at a guess, the tricuspid valve (separating the right atrium from the right ventriclel) has three cusps (flaps) simply because the diameter of the right side of the heart chambers are greater than the diameter of of the chambers on the ...

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by Julie5
Sun Oct 24, 2010 10:45 am
 
Forum: Human Biology
Topic: Heart : Difference between tricuspid and bicuspid valves ?
Replies: 3
Views: 26188
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