Vitamin B12 (Cobalamin) is absorbed in the terminal ileum along with bile salts. Remember that this inquires Intrinsic Factor from the stomach! Other answer choices are primarily absorbed in other components of the GI tract.
Folic acid = Duodenum, Jejunum ("small bowel" in FA)
Iron = Duodenum
Thiamine = Jejunum
Riboflavin = "upper small intestine" when dietary or large intestine for the riboflavin produced by gut microbiome. See this paper
See FA 2019 p. 368 for the high-yield absorption sites.
submitted by โbaja_blast(219)
Vitamin B12 (Cobalamin) is absorbed in the terminal ileum along with bile salts. Remember that this inquires Intrinsic Factor from the stomach! Other answer choices are primarily absorbed in other components of the GI tract.
Folic acid = Duodenum, Jejunum ("small bowel" in FA)
Iron = Duodenum
Thiamine = Jejunum
Riboflavin = "upper small intestine" when dietary or large intestine for the riboflavin produced by gut microbiome. See this paper
See FA 2019 p. 368 for the high-yield absorption sites.