Bile Secretion And Gall Bladder Function

Bile Acids

Bile is responsible for the principal digestive functions of the liver. The presence of bile in the small intestine is necessary for the digestion and absorption of lipids. The problem of the insolubility of fats in water is solved by the constituents of bile. The bile salts and other organic components of bile are responsible in part for emulsifying fat so that it can be digested by pancreatic lipase. The bile acids also take part in solubilizing the digestion products into micelles. Micellar...

Normal Bowel Rectosphincteric Reflex

Rectosphincteric Reflex

FIGURE 12 Mass movement. (A) Colon before entry of barium sulfate. (B) Barium enters proximal ascending colon, showing haustra. (C) As more barium enters, the haustra disappear from a portion of the ascending and transverse colons, and a contraction begins in this area. (D) The contraction has moved a portion of the barium into the caudad transverse colon. (E) Haustra return. exposing them to absorptive surfaces. These contractions last from 12-60 seconds and generate intraluminal pressures...