Question

Which of the following are true statements regarding let-down reflex? Select all that apply.

1) Contractions of the myoepithelial cells forces milk into the duct system.
2) Oxytocin is released in response to infant suckling and woman's emotions.
3) It can occur during sexual arousal.
4) It occurs multiple times during feeding session.

Answer 1

The let-down reflex is a neuroendocrine reflex that stimulates the contraction of myoepithelial cells to force milk from the alveoli into the duct system. It is triggered by infant suckling and the release of oxytocin. The reflex occurs multiple times during a feeding session.

Step-by-step explanation:

The let-down reflex is a neuroendocrine reflex that occurs when an infant suckles, triggering the release of oxytocin from the posterior pituitary. This oxytocin stimulates the contraction of myoepithelial cells, which forces milk from the alveoli into the duct system. Therefore, statement 1 is true. Oxytocin is released in response to infant suckling, but not the woman's emotions. This hormone is responsible for stimulating the let-down reflex. So, statement 2 is true. The let-down reflex does not occur during sexual arousal, so statement 3 is false. The let-down reflex typically occurs multiple times during a feeding session, allowing for continuous milk supply to the infant. Therefore, statement 4 is true.