If a neurotransmitter fails to bind to receptors on the motor end plate, which of the following events would be the first one to fail to occur?
A)Ligand-gated sodium channels would not open.
B)Calcium ions would not enter the axon terminal.
C)Sodium ions would not enter the postsynaptic neuron.
D)A postsynaptic action potential would not be triggered.

Question

Quizplus · Accepted Answer

The first event that would fail to occur is the opening of ligand-gated sodium channels, which is directly dependent on the neurotransmitter binding to the receptors on the motor end plate.

If a Neurotransmitter Fails to Bind to Receptors on the Motor