Neural Input and Hormonal Output: oxytocin release and lactation
		• Supraoptic and paraventricular nuclei contain magnocellular neurons that secrete oxytocin into the general circulation in the posterior pituitary. • When a baby sucks on a mother’s nipples, mechanoreceptors are stimulated.  These receptors activate neurons that project to the magnocellular hypothalamic neurons, causing those cells to fire brief bursts, releasing oxytocin. • Oxytocin, in turn, increases contraction of myoepithelial cells in the mamillary glands, leading to milk ejection.