Oxytocin
Oxytocin is a peptide of nine amino acids which is secreted by the posterior pituitary gland.
| Notes | Further detail | |
|---|---|---|
| Source | Synthesized in the paraventricular nuclei of the hypothalamus, released by the posterior pituitary | |
| Function | Let-down reflex of lactation: causes contraction of the myoepithelial cells of the alveoli of the mammary glands Uterine contraction | In contrast prolactin, which is also released in response to suckling promotes the production of milk, as opposed to the let-down |
| Regulation | Increases secretion
| A synthetic version of oxytocin (Syntocinon) is routinely given in the third stage of labour and is used in the management of post-partum haemorrhage Adverse effects
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