This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidneys and Body Fluids, Subject name: Physiology
Renin is secreted by 
Select and explain. 
A. PCT, B. DCT, C. Collection duct, D. Juxtaglomerular apparatus
D: Juxtaglomerular apparatus
Answer: D: Juxtaglomerular apparatus 
Explanation: Ans. (d) Juxtaglomerular apparatus(Ref: Ganong, 25th ed/p.672)Juxtaglomerular cells synthesize, store and release an enzyme called renin