Oxytocin

Question

Oxytocin
A) is released by the posterior pituitary gland
B) stimulates uterine contraction
C) uses a positive feedback mechanism
D) all of the above

Accepted Answer

Oxytocin is a hormone that is released by the posterior pituitary gland in response to certain stimuli such as breastfeeding, sexual activity, and childbirth. It stimulates uterine contractions during labor and delivery and also helps to move milk through the breast during breastfeeding. Oxytocin uses a positive feedback mechanism, meaning that its release stimulates its own further release. Therefore, all of the above options are correct.