This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
Effect of CCK on gut is 
Select and explain. 
A. Increases gastric acid secretion, B. Increase small intestine peristalisis, C. Increases gastric motility, D. Relaxes gall bladder
B: Increase small intestine peristalisis
Answer: B: Increase small intestine peristalisis 
Explanation: CCK mediates digestion in the small intestine by inhibiting gastric emptying. It stimulates the acinar cells of the pancreas to release a juice rich in pancreatic digestive enzymes (hence an alternate name, pancreozymin) that catalyze the digestion of fat, protein, and carbohydrates Ref: guyton and hall textbook of medical physiology 12 edition page number:442,443,444