Topic 28 – Colonic Movements, Defecation and Large Intestinal Secretion

1. Curriculum Coverage

Physiology

• Types of movements of colon
• Gastro-colic reflex
• Duodeno-colic reflex

• Mechanism of defecation reflex

• Secretion of mucus by large intestine

• Constipation
• Megacolon

• Mechanism of diarrhea
• Causes of diarrhea

• Paralysis of defecation in spinal cord injuries