This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Location of beta 3 receptors include 
Select and explain. 
A. Bronchial muscle, B. Vascular muscle, C. Bladder, D. Uterus
C: Bladder
Answer: C: Bladder 
Explanation: .