Which part of the neuron secretes neurotransmitters

A)  neuromodulators 
B)  dendrites 
C)  myelin sheaths 
D)  terminal buttons

Terminal Buttons

The small knoblike structures at the end of an axon that release neurotransmitters to send signals to other neurons.

Neurotransmitters

Chemical substances in the nervous system that transmit signals across a synapse from one neuron to another, influencing both mental and physical functions.

Neuron

A neuron is a specialized cell transmitting nerve impulses; a nerve cell, the fundamental unit of the nervous system responsible for receiving and sending electrical signals throughout the body.