Iron Absorption 2

The video explores iron metabolism, focusing on the absorption of heme and non-heme iron in the duodenum. It explains the structure of heme B, the oxidation states of iron, and the dietary sources of heme and non-heme iron. The video details the absorption mechanisms in enterocytes, highlighting the roles of divalent metal transporter 1 and the heme transporter. It also discusses the regulation of iron levels in the body, the role of apoferritin, and the excretion of excess iron through intestinal cell sloughing.

Explain the Fenton reaction and its implications for iron toxicity.

Discuss the role of apoferritin in iron storage.

What is the function of transferrin in iron metabolism?

What happens to excess iron in the body, and how is it excreted?