An action potential is the message carried: By the dendrites of a neuron. By vesicles in the terminal buttons. By the axon of a neuron. By the synapse.
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These signals are then passed to the cell body. If the signals are strong enough, they can trigger an action potential. The action potential is an electrical signal that travels down the axon of the neuron. This is a rapid, temporary change in electrical Show more…
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Sanchit J.
Communication between nerve cells involves an electrical impulse that causes the release of neurotransmitters from the _____ terminal of the sending neuron across the _____ to the ______ of the receiving neuron. synapse; axon; dendrite axon; synapse; dendrite axon; dendrite; synapse dendrite; synapse; axon
Madhur L.
a) Once an action potential is initiated at the axon hillock, what property ensures that the signal will propagate forward, toward the axon terminals? Make sure to mention how the voltage-gated Na+ channels play a role. b) In a myelinated axon, the action potential is said to jump from node to node. Which term describes this form of propagation? What differs between how the signal is conveyed in the myelinated sections and in the nodes? a) List the names of excitatory postsynaptic potentials in the NMJ and CNS. For each, also identify one ionotropic receptor that mediates the change in potential and one neurotransmitter that binds to that receptor. b) Imagine that you are recording postsynaptic potentials from a neuron that receives glutamatergic input. Would you expect to observe broad APV-sensitive signals following a glutamatergic input firing at 10 spikes/s vs at 2 spikes/s? Why or why not.
Dominador T.
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