This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Relaxation of Detrusor occurs which receptors? 
Select and explain. 
A. b-1 sympathetic, B. b-2 sympathetic, C. a-1 sympathetic, D. a-2 sympathetic
B: b-2 sympathetic
Answer: B: b-2 sympathetic 
Explanation: Ans. is 'b' i.e., b-2 sympatheticRelaxation of detrusor is through beta-2 receptors.