Synaptic vesicles contain neurotransmitters and are present in the ________.

A) dendrites
B) cell body
C) axolemma
D) presynaptic terminals
E) trigger zone

Synaptic Vesicles

Small organelles within neurons that store and release neurotransmitters at the synapse.

Neurotransmitters

Chemicals released by neurons to transmit signals across a synaptic gap to a target cell.

Presynaptic Terminals

The ends of axons where neurotransmitters are stored before being released into the synaptic cleft in response to a nerve impulse.