In most vertebrate neurons, an action potential arrives at the axon terminal and causes the release of chemical messenger molecules.These molecules are
A) ATP.
B) glucose.
C) myelin.
D) neurotransmitters.
E) vesicles.

Question

Quizplus · Accepted Answer

The correct answer is neurotransmitters. This is because neurotransmitters are the chemical messengers that are released from the axon terminal of a neuron when an action potential arrives. These molecules then bind to receptors on the surface of another neuron or muscle cell, thereby transmitting the signal from one cell to another. ATP and glucose are not typically released as chemical messengers by neurons, and myelin is a fatty substance that forms a sheath around axons to facilitate rapid conduction of action potentials. Vesicles are the structures within the axon terminal that contain neurotransmitters before they are released.

In Most Vertebrate Neurons, an Action Potential Arrives at the Axon