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 in the brain that carries, boosts, and modulates signals across gaps or synapses of brain cells and between other cells in the body. Most neurotransmitters are made from protein or its subunits, amino acids. neurotransmitter is a chemical messenger in the brain that carries, boosts, and modulates signals across gaps or synapses of brain cells and between other cells in the body. Most neurotransmitters are made from protein or its subunits, amino acids.