Changes

====Other SMTs====

====Other SMTs====

The neuropeptide '''Acetylcholine (Ach)''' is primarily involved in skeletal muscle movement within the sympathetic nervous system and visceral movements as part of the parasympathetic nervous system. '''Nitrous oxide''' is involved in enlargement of the genital organs leading to erection.

The neuropeptide '''Acetylcholine (Ach)''' is primarily involved in skeletal muscle movement within the sympathetic nervous system and visceral movements as part of the parasympathetic nervous system. When binding to '''muscarinic''' receptors, ACh can have a number of different effects dependant on the type of receptor. If an '''M2''' receptor is bound this will result in hyperpolarisation of the cell and a slowing of the rate of spontaneous contraction of the heart. If an '''M3''' or an '''M5''' receptor is bound this will result in depolarisation of the cell and contraction of smooth muscle within glands.

'''Nitrous oxide''' is involved in enlargement of the genital organs leading to erection.

 

===Neuropeptides===

===Neuropeptides===

The neuropeptide '''vasopressin''' is responsible for metabolism and maintainence of the metabolic rate. '''Somatostatin'''

The neuropeptide '''vasopressin''' is responsible for metabolism and maintainence of the metabolic rate. '''Somatostatin'''