For discussing the functions of different structures of all organisms.
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Cutting the vagus nerve to the heart increases heart rate. What effect would it have in the force of contraction of the heart? Please explain the answer, anyone????????
If contractile strength is independent of muscle stretch and EDV ,but rather controlled by bloodborne chemicals (epinephrine, excess of Ca,thyroxine) which has little to do with the vagus (parasympathetic division) nerve, even if it's cut; then, yes, HR will increase, reflecting inherent rate of SA note (100beats/min), but the force of contraction will remain the same? Am I on the right path??
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