Question

which of the following is the normal route for bilirubin?
a) conjugated in the liver, carried in the bile to the intestines, converted to urobilinogen, excreted in the stool
b) converted to urobilinogen in the liver, then excreted via the feces
c) introduced into the intestine via the pancreatic duct and conjugated by bacteria
d) conjugated in the blood, carried to the liver, excreted via the kidneys

Explanation:

Bilirubin is conjugated in the liver. Then, it is carried in bile to the intestines. In the intestines, it is converted to urobilinogen, and finally excreted in the stool. Option b is wrong as conversion to urobilinogen occurs in the intestines, not the liver. Option c is wrong as bilirubin is conjugated in the liver, not by bacteria in the intestine via pancreatic duct. Option d is wrong as bilirubin is excreted via stool (not kidneys) after the described process.

Answer:

A. Conjugated in the liver, carried in the bile to the intestines, converted to urobilinogen, excreted in the stool