Which hormone is secreted by the hypothalamus and inhibits the release of growth hormone?
Somatostatin, secreted by the hypothalamus, inhibits the release of growth hormone from the pituitary gland. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Human Physiology - Digestion, Respiration, Circulation, Neural Control and Chemical Coordination, Topic: Organ system functions and hormonal regulation.