Dictionary » P » Pulmonary valve

Pulmonary valve

Definition

noun, plural: pulmonary valves

(anatomy, cardiology) The semilunar valve that lies between the right ventricle and the pulmonary artery, and generally has three cusps that regulate the closure and opening of the valve during ventricular systole


Supplement

The pulmonary valve is one of the two types of semilunar valves. The other is aortic valve. The pulmonary valve is located between the right ventricle and the pulmonary artery. Similar to aortic valve, the pulmonary valve has three cusps. The cusps regulate the opening and closure of the valve during ventricular systole. The opening of the pulmonary valve occurs when the pressure in the right ventricle rises above the pressure in the pulmonary artery. When the pulmonary valve opens the blood from the right ventricle moves into the pulmonary artery. When the pressure drops rapidly the pulmonary valve closes. When closed, the blood is prevented from flowing back into the ventricle. The closure of pulmonary valve (together with the aortic valve) accounts for the second heart sound.


Synonym(s):

  • pulmonic valve

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Re: Sequence of events in heart

... The right ventricle contracts. What happens next? Does the tricuspid valve close first before the opening of the pulmonary valve? Or is it the other way round? The entering blood into right ventricle will ...

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by Dr.Stein
Tue Nov 15, 2005 11:25 am
 
Forum: Human Biology
Topic: Sequence of events in heart
Replies: 4
Views: 4923

Sequence of events in heart

... "used blood" from the body. Blood will be pushed through the tricuspid valve to the 2. Right Ventricle, the chamber which will pump to the lungs through the pulmonic valve to the 3. Pulmonary Arteries, providing blood to both lungs. Blood is circulated through the ...

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by biostudent84
Thu Nov 10, 2005 5:56 pm
 
Forum: Human Biology
Topic: Sequence of events in heart
Replies: 4
Views: 4923

Sequence of events in heart

... The right ventricle contracts. What happens next? Does the tricuspid valve close first before the opening of the pulmonary valve? Or is it the other way round?

See entire post
by Navin
Thu Nov 10, 2005 11:01 am
 
Forum: Human Biology
Topic: Sequence of events in heart
Replies: 4
Views: 4923


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