In the liver, free bilirubin moves from the plasma in the sinusoids into the hepatocytes, where it is converted into:
a. unconjugated bilirubin.
b. biliverdin.
c. conjugated bilirubin.
d. urobilinogen.
ANS: C
Within hepatocytes, unconjugated bilirubin joins with glucuronic acid to form conjugated biliru-bin, not unconjugated, which is water soluble and is secreted in the bile.
Biliverdin is a precursor of bilirubin. When conjugated bilirubin reaches the distal ileum and co-lon, it is deconjugated by bacteria and converted to urobilinogen.
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