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Question

Which of these is responsible for the "milk ejection reflex"?
  1. Oxytocin
  2. Prolactin
  3. Vasopressin
  4. Leutotrophin


Solution

The correct option is A Oxytocin
Sensory impulses associated with the baby’s suckling trigger the posterior pituitary gland to release oxytocin. Oxytocin stimulates contraction of the smooth muscles surrounding the alveolar ducts, thus causing milk to be ejected by the breast. This pathway is known as the milk-ejection reflex.

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