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Wiktionary
oxytocin

n. (context hormone English) A hormone that stimulates contractions during labour/labor, and then the production of milk.

WordNet
oxytocin

n. hormone secreted by the posterior pituitary gland (trade name Pitocin); stimulates contractions of the uterus and ejection of milk [syn: Pitocin]

Wikipedia
Oxytocin

Oxytocin (Oxt) is a hormone, neuropeptide, and medication. As a medication, it is used to cause contraction of the uterus in order to start labor or increase the speed of labor, and to stop bleeding following delivery. For this purpose, it is given either by injection into a muscle or into a vein.

The use of oxytocin as a medication can result in excessive contraction of the uterus that can cause distress in an unborn baby. Common side effects in the mother include nausea and a slow heart rate. Serious side effects include water intoxication with an excessive dose and uterus rupture. Allergic reactions may also occur.

Oxytocin is normally produced by the paraventricular nucleus of the hypothalamus and released by the posterior pituitary. It plays a role in social bonding, sexual reproduction in both sexes, and during and after childbirth. Oxytocin is released into the bloodstream as a hormone in response to stretching of the cervix and uterus during labor and with stimulation of the nipples from breastfeeding. This helps with birth, bonding with the baby, and milk production.

Oxytocin was discovered in 1952. It is on the World Health Organization's List of Essential Medicines, the most important medications needed in a basic health system. , the wholesale cost in the developing world is –0.56 per dose.

Usage examples of "oxytocin".

The old theory was that oxytocin caused the uterus to contract so violently that the amniotic fluid was forced out of the water bag and into the veins of the womb.

The American biochemist Vincent du Vigneaud and his associates obtained two pure substances from the posterior pituitary extracts, of which one possessed the blood-pressure-raising effect and was named vasopressin and the other possessed the uterus-stimulating effect and was named oxytocin.

Du Vigneaud found oxytocin and vasopressin to be unusually small peptides, with molecular weights just above 1000.

New ones kick in, chemicals that engender a sense of security, well-being, and attachment: vasopressin in men and oxytocin in women.

If the paramedics were the ones injecting the oxytocin and they did not inject it in the ambulance, when and where did they inject it?

Rae told him about her oxytocin theory and the role she suspected the Hillstar ambulance drivers played.

Hillstar ambulance had enough oxytocin in it to get every baby in America delivered in sixty seconds.

Those drinks were chock full of oxytocin, dopamine, norepinephrine, phenylethylamine and God knows what else.

Serotonin, phenylethylamine and oxytocin which is the one responsible for the bonding between a mother and her baby.

If only someone had given her mother oxytocin, or Methergine, Rae thought briefly, she would not have died in the back of that ambulance.

What made Rae most suspicious was the fact that she had not told Sam that she suspected the paramedics were using oxytocin.

Rae could see that the syringes were prefilled with the oxytocin the clear fluid that was meant to enhance labor, not hurl patients to their deaths.

Whoever had ordered the paramedic to use the BC bin bags might very well be the same person who had paid Theodore to spike the bags with oxytocin in the first place.

Regardless of oxytocin, some women respond to stress sometimes with aggression and with flight, and regardless of testosterone, men can respond with tending and befriending responses to stress.