neurotransmittersVersión en línea a chemical substance that is released at the end of a nerve fiber by the arrival of a nerve impulse and, by diffusing across the synapse or junction, causes the transfer of the impulse to another nerve fiber, a muscle fiber, or some other structure. por Evie Trevino 1 adrenaline 2 noradrenaline 3 dopamine 4 serotonin 5 gaba 6 acetylcholine 7 gultamate 8 endorphins