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Biology 15 Online
OpenStudy (anonymous):

The right ventricle generates lower pressure than the left ventricle. This is also true for the right and left atria. Explain why this pattern for the atria must be true for the heart to work properly?

OpenStudy (anonymous):

@pooja195 @Luigi0210

OpenStudy (anonymous):

Help is appreciated :)

OpenStudy (anonymous):

@zepdrix @Preetha Thanks in advance

rvc (rvc):

left ventricle pumps Blood for the whole body. isn't it? @allykat

rvc (rvc):

@somy is best :)

OpenStudy (anonymous):

Remember the answer I gave you on the last post? If the pressure of the blood coming out the atria didn't match the pressure of the blood coming out the ventricle then there would be a chance for the blood to be pushed back up into the artia. Instead, the pressure for each atria is relatively matched to the pressure of its adjacent ventricle so that the blood will evenly flow without retrograde.

syed98 (syedmohammed98):

it generates lower pressure because it only need to get the blood to the lungs Which are NEARBY but the left ventricle need to pump the blood ALL THE WAY round the body so more pressure in required

syed98 (syedmohammed98):

about the atria ..the reason is almost same. they only need to push the blood into the ventricles which are NEARBY ( short distance) where as the ventricle need more pressure because they push the blood out of the heart so longer distance for ventricles..more pressure required for ventricle =)

syed98 (syedmohammed98):

ventricles*

OpenStudy (anonymous):

@SyedMohammed98 Have you ever tried to open a door on a windy day and experienced the way the door is hard to open because of the wind on the other side? The same thing is what the atrioventricular valves would experience. The right atrium has a pressure that matches the right ventricle so that the blood can pass through the valve without being pushed back in. And the left atrium has a pressure (much higher than the right atrium) to match the left ventricle for the same reason. The blood is being pumped out of the ventricles while at the same time blood is being pumped out of the atria into the ventricles. If the pressure wasn't equal respectively for each atrioventricular dynamic, then the pump from the atria would be over powered and the blood would be forced back into the atria with devastation effects. You have a point about the distances, this is a key point for the ventricles. For the atria, however, they must be able to support their adjacent ventricle. And to answer the question, that's why in the same way the left ventricle moves blood at a higher pressure than the right, so too does the left atrium pump blood at a higher pressure than the right. I hope this makes sense

syed98 (syedmohammed98):

wow!....amazing explanation bro...

OpenStudy (anonymous):

Thanks everyone for your help. I understand now :)

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