is it true the prolactin stimulates the alveoli to produce milk and inhibits the release of milk from the breasts

1 answer

Yes, it is true that prolactin stimulates the alveoli (the milk-producing cells) in the breasts to produce milk. Prolactin is a hormone secreted by the pituitary gland in response to the baby suckling at the breast or during pregnancy. It is responsible for the growth and development of the mammary glands and the production of milk.

However, it is not entirely accurate to say that prolactin inhibits the release of milk from the breasts. The hormone responsible for the release or ejection of milk from the breasts is called oxytocin. Oxytocin is released in response to nipple stimulation, causing the muscles surrounding the alveoli to contract and squeeze out the stored milk. Prolactin and oxytocin work together in the process of breastfeeding, with prolactin stimulating milk production and oxytocin facilitating its release.