VPB 121: Veterinary Physiology - II (2+1)

SMALL INTESTINE

• Small intestine is the predominant site of digestion and absorption. This begins at the end of pyloric sphincter and goes upto large intestine. This is highly coiled structure, has few glands to assist digestion.

• It is composed of 4 layers-serosal (outer), muscular, submucosa and innermost mucosal layer. Mucosa is the functional layer involved in digeston and absorption.

• Has three major portions namely duodenum, jejunum and ileum, with specific functions.