5 Label the neuromuscular junction. Labels Drop Zones Reset All Print Acetylcholine Presynaptic vesicle Voltage-gated Ca$^{2+}$ channel Synaptic cleft Ligand-gated Na$^+$ channel Axon
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Label the features of a neuromuscular junction. Synaptic vesicle Motor neuron axon Motor end plate Acetylcholine molecule Synaptic vesicle Mitochondrion Synaptic cleft
Sri K.
Signals move between neurons at synapses. PROCESS: ACTION POTENTIAL TRIGGERS RELEASE OF NEUROTRANSMITTER. 1. Action potential arrives. Na+ and K+ channels. Action potentials. 2. Voltage-gated Ca2+ channels open. Presynaptic membrane (of axon). Synaptic vesicles. 3. Synaptic vesicles release neurotransmitter. 4. Neurotransmitter triggers change in postsynaptic cell potential. Postsynaptic membrane (of dendrite or cell body). 5. Neurotransmitter broken down or released. Synaptic cleft. Neurotransmitter. Neurotransmitters bind to ligand-gated ion channels that cause post-synaptic potentials
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