The main site of absorption of iron is the ________________.a.ileumb.colonc.jejunumd.duodenum

Answer to the Question

The main site of absorption of iron is the duodenum.

Explanation

Iron is primarily absorbed in the small intestine, especially in the duodenum, which is the first part of the small intestine following the stomach. The absorption occurs mainly in its initial segment, where dietary iron, either in heme form (from animal sources) or non-heme form (from plant sources), is taken up by specific transporters. The body regulates iron absorption tightly to maintain homeostasis, as excess iron can be harmful.

Therefore, given the options provided: a. ileum
b. colon
c. jejunum
d. duodenum

The correct answer is d. duodenum.