Physiology In infants, defecation often following meal. The cause of colonic contraction in this situation is A Gastroileal reflex B Enterogastric reflex C Increased circulation levels of CCK D Gastrocolic - reflex 💡 Explanation In infants, defecation often following meal. The cause of colonic contraction in this situation is ✓ Correct Answer: D. Gastrocolic - reflex