Activation of the parasympathetic nervous system will increase the number of action potentials generated by the interstitial cells of Cajal, thus, increasing motility throughout the digestive tract. True False
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When neurotransmitters cross the synaptic cleft and bind to ligand-gated potassium channels, the inside of the cell becomes more positive. As a result, the cell approaches threshold and an inhibitory postsynaptic potential is generated. Subsequently, the axon hillock generates an action potential.
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During micturition, the action potentials transmitted by sensory neurons from the urinary bladder into the spinal cord cause an increase in tonic discharge of motor neurons of the external sphincter. There is a decrease in tonic discharge of motor neurons of the internal sphincter.
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A decrease in the number of activated receptors in the postsynaptic membrane has what effect on signal transduction? Higher sensitivity due to depolarization of the postsynaptic cell. Long-term potentiation: higher sensitivity of the postsynaptic neuron. Initiation of mitosis in the neuron. The firing rate of action potentials does not depend on the density of postsynaptic receptors. Habituation to the stimulus: lower sensitivity due to hyperpolarization of the postsynaptic cell.
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