Pregnancy and Lactation Physiology · Physiology

Suckling stimulates prolactin secretion via:

  1. A rise in hypothalamic dopamine release
  2. Reduced hypothalamic dopamine inhibition
  3. A sharp increase in estrogen secretion
  4. Direct mechanical stimulation of the pituitary
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Correct answer: Reduced hypothalamic dopamine inhibition

Suckling reduces dopamine release from the hypothalamus. This removes inhibition on prolactin secretion.

Difficulty: Medium Question 17 of 20

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