Which statement concerning the intrinsic factor is correct?
A) It is secreted by the parietal cells in the stomach.
B) It is necessary for absorption of vitamin B12.
C) It is abundant in pernicious anemia.
D) It is secreted by the parietal cells in the stomach and necessary for absorption of vitamin B12.

Question

Quizplus · Accepted Answer

The intrinsic factor is a glycoprotein that is secreted by the parietal cells in the stomach, and it is necessary for the absorption of vitamin B12. Pernicious anemia is a condition in which there is a deficiency of intrinsic factor, leading to decreased absorption of vitamin B12. Therefore, statement D is the correct choice, as it accurately reflects both the source and function of the intrinsic factor.

Which Statement Concerning the Intrinsic Factor Is Correct