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'''Dopamine''' is involved in motivation as well as love and addiction. '''Serotonin''' is involved in emotions, conciousness, sleep and thermoregulation. '''Melatonin''' is responsible for the regulation of onset of sleep and also for seasonal changes in the body such as winter weight gain and mating seasons. '''Histamine''' release results in increased gastric secretions, dilation of capillaries, constriction of bronchial smooth muscle and decreased blood pressure.

'''Dopamine''' is involved in motivation as well as love and addiction. It is effectively a 'reward system' for the brain. Dopamine also affects the way in which the basal ganglia of the brain affect our movements and a shortage of dopamine can result in diseases such as Parkinson's. Dopamine is the primary neuroendocrine regulator of [[Lactation_-_Endocrine_Control_-_Anatomy_%26_Physiology|'''prolactin''']] from the anterior pituitary gland. Dopamine produced by the hypothalamus is secreted via the hypothalamo-hypophysal blood vessels which supply the pituitary gland. Secretion of prolactin via lactotrope cells within the pituitary is inhibited by dopamine.

'''Serotonin''' is involved in emotions, conciousness, sleep and thermoregulation. '''Melatonin''' is responsible for the regulation of onset of sleep and also for seasonal changes in the body such as winter weight gain and mating seasons. '''Histamine''' release results in increased gastric secretions, dilation of capillaries, constriction of bronchial smooth muscle and decreased blood pressure.

====Other SMTs====

====Other SMTs====