Oxytocin

Oxytocin is a hormone secreted by neurons in the hypothalamus, which is then transported to the posterior pituitary gland. Oxytocin causes uterine contractions during labor and also stimulates milk secretion from the mammary glands by contracting the myoepithelial cells of the mammary acini. To stimulate uterine contractions, as well as to stop or prevent postpartum hemorrhage, an extract of pituitary gland secretion (syntocinon) is used.

Oxytocin is a polypeptide hormone of the anterior hypothalamus. Refers to cytokines. It has a strong stimulating effect on the smooth muscles of the uterus, causing its contractions. The experiment established that oxytocin contracts the myometrium in an isolated smooth muscle preparation, in single cells, but no significant changes were recorded in the placebo control. Produced by nerve endings in the hypothalamus and some internal organs, such as the mammary glands. Increases blood pressure, activates pupillary contractions and tachycardia. Regulates various behavioral responses associated with social interaction between people.

Oxytocin receptors are also present in the spinal and medulla oblongata, cerebellum,