Assorted References. 1  cloning (in cloning) 2  cytoskeleton (in cytoskeleton) 3  fluid regulation (in excretion: Regulation of water and salt balance) 4  genetic behaviour (in genetics) 5  immune system (in immune system: Cellular defenses) 6  interaction with drugs (in drug: Mechanisms) 7  mutation (in mutation (genetics)) 8  cytology (in cytology)
Definition of neurotransmitter in English: A chemical substance which is released at the end of a nerve fibre by the arrival of a nerve impulse and, by diffusing across the synapse or junction, effects the transfer of the impulse to another nerve fibre, a muscle fibre, or some other structure.Example sentences.oun. A chemical substance which is released at the end of a nerve fibre by the arrival of a nerve impulse and, by diffusing across the synapse or junction, effects the transfer of the impulse to another nerve fibre, a muscle fibre, or some other structure.
A neurotransmitter is a chemical messenger that carries, boosts, and balances signals between neurons, or nerve cells, and other cells in the body. Billions of neurotransmitters work constantly to keep our brains functioning, managing everything from our breathing to our heartbeat to our learning and concentration levels.