Neuroendocrine integration · Physiology

Which hormone secretion is increased during sleep and regulated by hypothalamic input?

  1. Cortisol, which peaks in the early morning hours
  2. Growth hormone
  3. Aldosterone, driven mainly by the renin system
  4. Insulin
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Correct answer: Growth hormone

Growth hormone secretion increases during deep sleep. Its release is controlled by hypothalamic GHRH and somatostatin.

Difficulty: Medium Question 18 of 20

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