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A young infant may be feeding entirely on mother’s milk which is white in colour but the stools which the infant passes out is quite yellowish. What is this yellow colour due to?

  1. A
    Bile pigments passed through bile juice
  2. B
    Undigested milk protein casein
  3. C
    Pancreatic juice poured into duodenum
  4. D
    Intestinal juice

Solution & Step-by-step Explanation

The yellow/brown color of feces is primarily due to bile pigments (bilirubin and biliverdin) that are excreted by the liver into the intestine via bile juice. In the gut, these are converted by bacteria into stercobilin, which gives the stool its color.

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A young infant may be feeding entirely on mother’s milk which is white in colour but the stools which the infant passes out is quite yellowish. What is this yellow colour due to?
A
Bile pigments passed through bile juice
B
Undigested milk protein casein
C
Pancreatic juice poured into duodenum
D
Intestinal juice

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Digestion and AbsorptionLiverBile

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