What is the correct sequence at a synapse
A)neurotransmitter diffuses across cleft; calcium induces exocytosis of neurotransmitter; permeability of postsynaptic membrane is altered; neurotransmitter binds to receptor on chemically gated channel; ion channels open
B)neurotransmitter diffuses across cleft; ion channels open; permeability of postsynaptic membrane is altered; calcium induces exocytosis of neurotransmitter; neurotransmitter binds to receptor on chemically gated channel
C)calcium induces exocytosis of neurotransmitter; neurotransmitter diffuses across cleft; neurotransmitter binds to receptor on chemically gated channel; ion channels open; permeability of postsynaptic membrane is altered
D)permeability of postsynaptic membrane is altered; neurotransmitter diffuses across cleft; ion channels open; neurotransmitter binds to receptor on chemically gated channel; calcium induces exocytosis of neurotransmitter

Question

Quizplus · Accepted Answer

The correct sequence at a synapse starts with calcium inducing the exocytosis of neurotransmitter, followed by the neurotransmitter diffusing across the synaptic cleft. The neurotransmitter then binds to receptors on chemically gated channels on the postsynaptic membrane, causing ion channels to open and altering the permeability of the postsynaptic membrane.

What Is the Correct Sequence at a Synapse