Gastrectomy produces deficiency of which vitamin -: (A) VitaminB6, (B) Vitamin B12, (C) Vitamin B2, (D) Vitamin B1
Answer is B. Ans. is 'b' i.e.. Vitamin B12 o The intestinal absorption of vitamin Bu requires intrinsic factor (IF), secreted by parietal cells of the stomach.o In stomach vitamin Bt2 binds to IF to form vitamin Bn-IF complex which intum is absorbed by sepecific receptors on mucosal cells of the ileum.o Vitamin Buis also called as 'extrinsic factor' of castle.