This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Opioids and Alcohols, Subject name: Pharmacology
All of the following effects are produced by mu opioid receptor except ? 
Select and explain. 
A. Tachycardia, B. Miosis, C. Sedation, D. Euphoria
A: Tachycardia
Answer: A: Tachycardia 
Explanation: Effects of Mu opioid receptor activation results in S- Sedation A- Analgesia C- Constipation R- Respiratory depression U- eUphoria M- Miosis