_____ have a quieting effect on the brain and are _____ of the neurotransmitter GABA.

Question:

_____ have a quieting effect on the brain and are _____ of the neurotransmitter GABA.

A. Depressants; agonists

B. Stimulants; antagonists

C. Depressants; antagonists.

Neurotransmitters:

Chemical messengers that carry neuronal signals from a neuron to its target cell are called neurotransmitters. Some neurotransmitters increase the likelihood of action potentials in the target neuron but others decrease it.