The mass movement of the colon would be abolished by: (A) Extrinsic denervation, (B) Distension of the colon, (C) Gastrocolic reflex, (D) Destruction of auerbach's plexus
Answer is D. Distension of the colon and gastro - colic reflex stimulates mass movement through the myenteric plexus / Auerbach plexus. So if it destroyed, mass movement gets abolished.