Which of the following hormones is responsible for milk let-down reflex during lactation?

Correct option is A

Sol. Oxytocin triggers the milk let-down reflex by causing contraction of myoepithelial cells in mammary glands. Explanation of each option: ● (a) Oxytocin – Correct answer. Facilitates ejection of milk from alveoli. ● (b) Prolactin – Stimulates milk production, not milk ejection. ● (c) Estrogen – Prepares breasts for lactation but doesn't initiate milk release. ● (d) Human Growth Hormone – Involved in body growth, not lactation control.