Which of the following is the most direct result of depolarising 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.

Question

Quizplus · Accepted Answer

Depolarizing the presynaptic membrane of an axon terminal triggers the opening of voltage-gated calcium channels. The resulting influx of calcium ions triggers the fusion of synaptic vesicles with the membrane, releasing neurotransmitters into the synaptic cleft. This process ultimately leads to the generation of EPSPs or IPSPs in the postsynaptic cell.

Which of the Following Is the Most Direct Result of Depolarising