Heart

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Issue:

Miscellaneous

 

Written by:

Marie H

 

Date added:

September 7, 2016

 

Level:

University

 

Grade:

A

 

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4 / 1044

 

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6290 times

 

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The second sound is louder and sharp. It is associated with closure of the pulmonary and aortic valves (semilunar valves) at the beginning of diastole. There is a pause between the each set of sounds. It is a period of total heat relaxation called quiescent period. Q.2 Which structures are responsible for these sounds? If these structures were damaged or functionally incorrectly, what do you think would happen to the heart sound? The structures responsible for these sounds are: pulmonary, aortic and atrioventricular valves...
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These sounds are results of vibration caused by closure of these valves. Other sounds known as "heart murmurs" are sometimes a sign of heart disease. "Murmurs can be produced by blood flowing rapidly in the usual directions through an abnormally narrowed valve" (Vander, Sherman and Luciano, 1985, p.326) and in some cases, as mitral valve prolapse, the individual does not show any symptoms...
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