Which of the following is the most direct result of depolarizingthe presynaptic membrane of an axon terminal?(A) Voltage-gated calcium channels in the membrane open.(B) Synaptic vesicles fuse with the membrane.(C) Ligand-gated channels open, allowing neurotransmittersto enter the synaptic cleft.(D) An EPSP or IPSP is generated in the postsynaptic cell.

Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter4: Principles Of Neural And Hormonal Communication
Section: Chapter Questions
Problem 4TAHL: Assume presynaptic excitatory neuron A terminates on a postsynaptic cell near the axon hillock and...
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Which of the following is the most direct result of depolarizing
the presynaptic membrane of an axon terminal?
(A) Voltage-gated calcium channels in the membrane open.
(B) Synaptic vesicles fuse with the membrane.
(C) Ligand-gated channels open, allowing neurotransmitters
to enter the synaptic cleft.
(D) An EPSP or IPSP is generated in the postsynaptic cell.

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