Which hormone is responsible for milk ejection (the let-down reflex)?

Answer and explanation

Correct answer: C. Oxytocin

  1. Step 1: Suckling stimulates oxytocin release which contracts the myoepithelial cells.
Answer
Oxytocin.
Why not the others: Prolactin, Oestrogen and Progesterone do not fit this picture as well.

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