Q:

Growth hormone

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Growth hormone.


  1. Promotes positive nitrogen and phosphorus balance.
  2. Secretion is under hypothalamic control.
  3. Levels in the blood are higher in children than in adults.
  4. Secretion surges during sleep.
  5. Stimulates the liver to secrete somatomedins which regulate bone and cartilage growth.

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A. True It is an anabolic hormone.

B. True Secretion in the pituitary is stimulated by growth hormone releasing factor and inhibited by somatostatin from the hypothalamus.

C. False Blood levels are similar in children and adults.

D. True Sleep is a time for anabolic activity.

E. True Somatomedins (insulin-like growth factors, IGF) from the liver inhibit the pituitary secretion of growth hormone and stimulate release of somatostatin from the hypothalamus.

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