In which of the following diseases is the liver affected,and the skin and eyes turn yellow due to the deposition of bile pigments?

$A$ : In acute constipation,purgatives containing magnesium salts are generally used.
$R$ : The osmotic effect of $Mg^{2+}$ in the intestinal lumen prevents water reabsorption from the intestine. $Mg^{2+}$ increases the solute concentration in the intestinal lumen because $Mg^{2+}$ is absorbed very slowly.

Removal of the stomach causes:

Which of the following characteristics is associated with pernicious anemia?

Select the correct option regarding disorders of the digestive system.

Which part of the digestive system is affected in celiac disease?