This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and Reproduction, Subject name: Physiology
Stimulus for insulin secretion is- 
Select and explain. 
A. Somatostatin, B. Growth hormone, C. Diuretics, D. a-agonist
B: Growth hormone
Answer: B: Growth hormone 
Explanation: Ans. is 'b' i.e., Growth hormone * Factors affecting insulin secretion arei) Simulating insulin secretion :- Glucose, mannose; amino acids (arginine, leucine); Intestinal hormones (GIP, gastrin, secretin, CCK, GLP-1); b-keto acids; Parasympathetic stimulation (acetylcholine); cAMP; b-adrenergic stimulation; theophylline; sulfonylureas; and certain endocrine hormones like growth hormone, glucagon and glucocorticoids.ii) Inhibiting insulin secretion Somatostatin; 2-deoxyglucose; Mannoheptulose; a-adrenergic stimulation, b-adrenergic inhibitors; Galanin; Diazoxide; Thiazide diuretics; K+ depletion; Phenytoin; Alloxan; Microtubule inhibitors; and insulin itself.