Cecum and colon - Functions and structures - Colon

3 important questions on Cecum and colon - Functions and structures - Colon

What leads to colonic motility?

1. Patterns that promote digestion and absorption: peristalsis, mixing movements, antiperistalsis for intense mixing
2. Patterns that empty colon: reflexes (gastrocolic and duodenocolic, stetching that moves food aborally), and intense colonic propulsive motility

What is secreted in the colon?

Mucus and HCO3-

What controls the secretion of content in the colon?

ENS control and modulation via PSNS.
- HCO3- channels and HCO3-/Cl- antiporters with Na+/Cl- transport

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