Biochemistry Which of the following is true about somatostatin, insulin, and glucagon? A Somatostatin stimulates insulin. B Glucagon blocks insulin and Somatostatin release. C Insulin increases glucagon release. D Somatostatin blocks release of insulin and glucagon. 💡 Explanation Which of the following is true about somatostatin, insulin, and glucagon? ✓ Correct Answer: D. Somatostatin blocks release of insulin and glucagon.