The term neurotransmitter refers to __________

A) a chemical found in the synaptic vesicles that is released into the synapse.
B) any one of a number of chemical compounds that increase the activity of the endocrine system.
C) the chemical substance found in the cell membrane.
D) the DNA contained in the nucleus of every neuron.

Neurotransmitter

Chemical substances that transmit signals across a synaptic gap from one nerve cell to another.

Synaptic Vesicles

Small structures within neurons that store neurotransmitters, which are released during neurotransmission to send signals to other neurons.

Synapse

The junction between nerve cells where neurotransmitters are released, allowing signals to pass from one neuron to another.