The typical coloration of the feces is due to
A)bile salts
B)undigested cellulose
C)aqueous NaHCO3 secretion
D)modified bilirubin
E)disintegrated epithelial cells

Question

Quizplus · Accepted Answer

The typical coloration of feces is due to modified bilirubin, which is a breakdown product of hemoglobin from red blood cells. Bilirubin is produced in the liver and secreted into the intestines as a component of bile. In the intestine, bilirubin is modified by bacterial action, resulting in the typical brown color of feces.

The Typical Coloration of the Feces Is Due to