Fast responses are mediated by ion channels. Chemically gated ion channel Postsynaptic cell Neurotransmitters create rap

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Fast Responses Are Mediated By Ion Channels Chemically Gated Ion Channel Postsynaptic Cell Neurotransmitters Create Rap 1 (48.81 KiB) Viewed 28 times

Fast responses are mediated by ion channels. Chemically gated ion channel Postsynaptic cell Neurotransmitters create rapid, short-acting fast synaptic potentials. lon channels open More Na in EPSP = excitatory depolarization More K out or Cr in IPSP = inhibitory hyperpolarization Less Na in Presynaptic axon terminal. Neurocrine H Alters open state of ion channels 8 lon channels close Inactive pathway Less K out EPSP = excitatory depolarization Slow responses are mediated by G protein-coupled receptors. Neuromodulators create slow synaptic potentials and long-term effects. R G protein-coupled receptor Activated second messenger pathway Modifies existing proteins or regulates synthesis of new proteins Coordinated intracellular response 10 ( g A M V