After a vesicle fuses with the presynaptic membrane and releases its contents into the synaptic cleft, the membrane is
A) destroyed by astrocytes.
B) incorporated into the postsynaptic membrane.
C) recycled to form new vesicles.
D) degraded and the debris removed from the axon terminal.
E) incorporated into the mitochondria.

Question

Quizplus · Accepted Answer

The membrane of the vesicle that fuses with the presynaptic membrane is recycled to form new vesicles. This recycling process is called endocytosis and is essential for the maintenance of synaptic transmission. After the release of neurotransmitters, the presynaptic membrane undergoes endocytosis, where it is internalized and sorted into different pathways leading to the formation of new synaptic vesicles. This process helps in maintaining the supply of neurotransmitters required for ongoing synaptic transmission.

After a Vesicle Fuses with the Presynaptic Membrane and Releases