need help with this biophysics question (2) (25 pts) There is a hole in the sept
ID: 217724 • Letter: N
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need help with this biophysics question
(2) (25 pts) There is a hole in the septum that separates the left ventricle and right ventricle: (a) Explain why you would expect the pressure in the left ventricle to decrease and that in the right ventricle to increase. (b) Explain why you would expect the stroke volume from the left ventricle to decrease because of this. (c) Explain why the oxygenation of the blood in the left ventricle would decrease and that in the right ventricle would increase. (d) If during systole the (gauge) pressure, stroke volume, and oxygenation levels (relative to that in the vena cavae) in the left ventricle each decreases by 10% body could try to compensate for this? Right atrium Left ? atrium Right ventricle Left ventricle Ventricular septal defect as a result of this, explain quantitatively how the Pulmonary Aorta arteryExplanation / Answer
a.As a result of a hole in the septum separating left and right ventricle,a turbulent left to right flow jet is created and thus,the total amount of blood recirculated through the lungs and back to the left ventricle is minimum.Hence,the pressure in the left ventricle decreases while that in the right ventricle increases.
b.As a left to right flow jet is created due to the hole in the septum,the stroke volume that is the blood pumped from left ventricle per stroke decreases.
c.As the left ventricle receives oxygenated blood from left atrium.Now,as the blood is flowing in a jet from left to right,the amount of oxygenated blood in the left ventricle decreases and that in the right ventricle increases.
d.If the stroke volume falls,cardiac output(which is stroke volume times heart rate) should decrease.So,the body will increase heart rate in order to compensate for the fall in stroke volume.
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