Heurotransmitters and their respective receptors influence the propagation of action potentials. Why does ACh release at skeletal muscles cause excitation and muscle contractions whereas ACh release at the heart causes inhibition and a slowing down of the heart rate and force of heart contractions? O the ACh released at skeletal muscles and the heart are not similar skeletal muscles have more ACh receptors the properties of the ACh receptors are different a and b

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