Oxytocin (Oxt, /ˌɒksɨˈtoʊsɪn/) is a mammalian neurohypophysial hormone (produced by the hypothalamus. Stored and secreted by the posterior pituitary gland) that acts primarily as a neuromodulator in the brain.Oxytocin plays an important role in the neuroanatomy of intimacy, specifically in sexual reproduction, in particular during and after childbirth. It is released in large amounts after distension of the cervix and uterus during labor, facilitating birth, maternal bonding, and, after stimulation of the nipples, lactation. Both childbirth and milk ejection result from positive feedback mechanisms.
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