In the heart how does the thickness of the muscles effect pressure of blood?

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theheart789
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So I know that in the left side of the heart there are thick muscles because it needs to CREATE a high pressure to pump to the rest of the body and overcome systemic circulation BUT why does the muscle need to be thick surely if the muscle just contracts hard enough even if its thin will produce a high pressure...please explain :/
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Dynamo123
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(Original post by theheart789)
So I know that in the left side of the heart there are thick muscles because it needs to CREATE a high pressure to pump to the rest of the body and overcome systemic circulation BUT why does the muscle need to be thick surely if the muscle just contracts hard enough even if its thin will produce a high pressure...please explain :/
Well, we consider that the left side of the heart has more number of muscle fibers. It's not a question of being thick or thin; it is a question of the number of fibers in the muscle mass. In the left ventricle, these are more and so we are able to achieve a greater force of contraction (since the ventricular muscle contracts in a syncytial fashion). And a greater force of contraction would then mean a greater pressure with which blood is pumped into the aorta.
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