If the axon terminal of a motor neuron suddenly became permeable to calcium ion,
A) the motor end plate will be hyperpolarized.
B) the neuron will fire an action potential.
C) the neuron will become unable to stimulate the muscle cell.
D) the motor end plate will be depolarized.
E) neurotransmitter release will be blocked.

Question

Quizplus · Accepted Answer

When the axon terminal becomes permeable to calcium ions, calcium enters the terminal, triggering the release of neurotransmitters, which then depolarize the motor end plate.

If the Axon Terminal of a Motor Neuron Suddenly Became