AP PSYCHOLOGY

Detailed explanation-1: -Oxytocin is a natural hormone that stimulates uterine contractions in childbirth and lactation after childbirth. It also affects aspects of human behavior and the male and female reproductive systems.

Detailed explanation-2: -Oxytocin contracts the uterus and promotes the progress of labour. A large oxytocin pulse occurs with the birth, and pulses continue afterwards, which help the new mother to birth the placenta, prevent bleeding, and warm her chest for skin-to-skin contact with her baby.

Detailed explanation-3: -Oxytocin production and secretion is controlled by a positive feedback mechanism where release of the hormone causes an action that stimulates more of its own release. For example, when contraction of the uterus starts during childbirth, oxytocin is released.

Detailed explanation-4: -Oxytocin is a powerful reproductive hormone with widespread effects on the brain and body of all mammals, for example, by mediating sperm ejection, labor contractions, and milk ejection.

Detailed explanation-5: -Oxytocin increases the amplitude and frequency of uterine contractions, which transiently impede uterine blood flow and decrease cervical activity, causing dilation and effacement of the cervix. Oxytocin causes contraction of the myoepithelial cells surrounding the alveolar ducts of the of the breast.