Asked in HealthConditions and DiseasesCardiovascular Health
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Conditions and Diseases
Cardiovascular Health
If the mitral valve does not close properly which circulation is affected?
Answer

Wiki User
September 27, 2007 4:44AM
The mitral valve is also known as the left atrioventricular valve. It prevents blood flow back into the atria while the ventricles are contracting. There are also two types of circulation through the heart. The systemic circuit carries blood to and from all the body tissues and is operated by the left side of the heart. The pulmonary circuit carries blood to and from the lungs and is operated by the right side of the heart. Because this valve is located on the left side, the systemic circulation is affected when the mitral valv is not functioning correctly.
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The mitral valve is located between the left atrium (LA) and the
left ventricle (LV). In normal circulation, oxygenated blood comes
from the lungs into the LA, Whe the LA contracts, the blood goes
into the LV. When the LV contracts, the blood is pumped into the
aorta for circulation throughout the body. The mitral valve
prevents blood from going back up to the LA from the LV during
ventricular contraction. Mitral regurgitation is when the mitral
valve does not close properly during ventricular contraction, and
allows blood to go back up to the LA.
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Heart disease need advic i have mitro heart disease and also an irregular heartbeat?

The question is not clear. You may have mitral valve prolapse,
mitral stenosis or mitral regurgitation.
Mitral valve prolapse is a heart problem in which the valve that
separates the upper and lower chambers of the left side of the
heart does not close properly.
Mitral stenosis is a heart valve disorder that involves the
mitral valve. This valve separates the upper and lower chambers on
the left side of the heart. Stenosis refers to a condition in which
the valve does not open fully, restricting blood flow.
Acute mitral regurgitation is a disorder in which the heart's
mitral valve suddenly does not close properly, causing blood to
flow backward (leak) into the upper heart chamber when the left
lower heart chamber contracts.
In open surgery, the surgeon makes a large incision (cut) in
your breastbone to reach the heart.
http://www.nlm.nih.gov/medlineplus/ency/article/000180.htm
http://en.wikipedia.org/wiki/Mitral_prolapse
http://www.nlm.nih.gov/medlineplus/ency/article/000175.htm
http://en.wikipedia.org/wiki/Mitral_stenosis
http://www.nlm.nih.gov/medlineplus/ency/article/000177.htm
http://www.nlm.nih.gov/medlineplus/ency/article/000176.htm
http://en.wikipedia.org/wiki/Mitral_regurgitation
http://www.nlm.nih.gov/medlineplus/ency/article/007411.htm
http://www.nlm.nih.gov/medlineplus/ency/article/007412.htm
Asked in Heart
The mitral valve is normally closed when?

The mitral valve, also called the AV valve, closes during
ventricular systole, which is one of the part of the cardiac cycle.
When the atria contracts (atrial systole), the ventricules fill
with blood, causing the mitral valve to close in order to avoid the
blood from flowing back into the atrium.
Hope it helps!!
Asked in Health
What prevents back flow into the left atrium?

Back flow into the left atrium from the left ventricle, also
known as mitral regurgitation, is prevented in a normal heart by
the bicuspid (mitral) valve. This valve opens during the
contraction of the atria to allow filling and preloading of the
left ventricle. The pressure of ventricular contraction (also known
as systole) causes the valve to close. This forces the blood
through the aortic valve into systemic circulation.
Blood passes from the left atrium into the left ventricle through
the mitral valve. During systole (when the ventricles
are pushing blood out of the heart), the mitral valve should snap
closed, preventing blood from the left ventricle from flowing back
into the left atrium. When the mitral valve fails to perform this
function, the resulting condition is called mitral valve
regurgitation.
The mitral valve
The closing of the mitral/bicuspid valve usually prevents
left-sided regurgitation.
The bicuspid valves which separate the left atrium and ventricles.
plus the pressure of the blood inside the heart favoring forward
movement of the blood into the less-blood-filled aorta when the
heart is squeezed (to put it simply).
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Are cavaliers healthy?

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float backwards from the ventrical into the adrium. This can lead
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How does a mitral valve prolapse affect the flow of blood?

Well, this is when the flaps of the valve are "floppy" and don't
close tightly. These flaps normally help seal or open the valve.
The mitral valve controls blood flow between the upper and lower
chambers of the left side of the heart. The mitral valve allows
blood to flow from the left atrium into the left ventricle, but not
back the other way. So bascially, backflow of blood in your heart
.