Physiology Renin is synthesized as a large preprohormone: Renin is secreted by which among the following? A PCT B DCT C Collecting duct D Juxtaglomerular apparatus 💡 Explanation Renin is synthesized as a large preprohormone: Renin is secreted by which among the following? ✓ Correct Answer: D. Juxtaglomerular apparatus