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: Pharmacology
Which of the following physiological effect is not produced by stimulation of Kappa opioid receptor? 
Select and explain. 
A. Sedation, B. Diuresis, C. Meiosis, D. Constipation
D: Constipation
Answer: D: Constipation 
Explanation: Constipation is due to stimulation of u receptor. The effect of stimulation of Kappa opioid receptor includes analgesia, dieresis, sedation, meiosis and dysphoria. Ref: Review of Medical Physiology by Ganong, 20th Edition, Page 107.