This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
Phospholipase C acts as secondary messenger for 
Select and explain. 
A. FSH, B. IH, C. TSH, D. GnRH
D: GnRH
Answer: D: GnRH 
Explanation: Phospholipase C is an enzyme which produces inositol tri phosphate and diacylglycerol They causes release of calcium ions which act as secondary messager Epinephrine, norepinephrine, angiotensin, ADH,TRH also require calcium as secondary messager Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:540 to 545