MEDICAL PHYSIOLOGY

Detailed explanation-1: -The most common neurotransmitter is acetylcholine, which often is the messenger between axons and muscles as well. Other common neurotransmitters are octopamine, serotonin, and dopamine; they usually function in the central nervous system.

Detailed explanation-2: -Neuroactive peptides are sequences of amino acids, usually longer than amino acid neurotransmitters yet shorter than hormones or proteins. Unlike the classic neurotransmitters described above, which are formed by enzymes near the presynaptic terminals, neuroactive peptides are assembled by ribosomes attached to the…

Detailed explanation-3: -Neuropeptides generally range from 3 to 36 amino acids in length, and are thus larger than small-molecule neurotransmitters. Also, neuropeptides must made in the cell body because their synthesis requires peptide bond formation.

Detailed explanation-4: -Types of neurotransmitters Based on chemical and molecular properties, the major classes of neurotransmitters include amino acids, such as glutamate and glycine; monoamines, such as dopamine and norepinephrine; peptides, such as somatostatin and opioids; and purines, such as adenosine triphosphate (ATP).