G.I. Motility of Small and Large Intestine

Question 1

Functions of Small Intestine Contractions:

Answer 1

• Mixing of ingested food with digestive secretions
• Circulation of all intestinal content to facilitate contact with the intestinal mucosa
• Net propulsion of intestinal contents in an aboral direction

Question 2

Patterns of Small Intestinal Motility

Answer 2

• Segmentation
• Peristalsis
• Migrating Motor Complex

Question 3

Segmentation

Answer 3

• Mixing and circulating
  
  • Digestive secretions and enzymes
  • Contact with intestinal mucosa
• Nonpropulsive
• Contractions are at the proximal and distal sites
• Slow down the aboral movement of ingesta