Question

what is usually a major component of gallstones?
multiple choice
uric acid
bile pigments
calcium salts
cholesterol

Explanation:

Gallstones are formed in the gallbladder. Cholesterol is the major component of most gallstones (about 80% of gallstones are cholesterol - based). Uric acid is more related to kidney stones in some cases. Bile pigments (like bilirubin) can be part of pigment stones (a smaller proportion of gallstones). Calcium salts can be associated with the composition of some stones but are not the major component in general.

Answer:

Cholesterol