Physiology Penile erection is due to:- A Reflex sympathetic action on the aerioles B Parasympathetic impulses causes dilatation of aerioles C Reflex sympathetic activity on venules D Reflex parasympathetic activity on the venules 💡 Explanation Penile erection is due to:- ✓ Correct Answer: B. Parasympathetic impulses causes dilatation of aerioles