Iron Metabolism and Absorption Concepts

Dr. Bina discusses iron metabolism, focusing on absorption, transport, and storage. Key topics include iron distribution in the body, daily requirements, sources, and factors affecting absorption. The video also covers the regulation of iron absorption and the roles of ferritin and transferrin in iron transport and storage.

What percentage of total body iron is found in hemoglobin?

• 50%

• 75%

• 25%

• 10%

Which of the following is a rich non-vegetarian source of iron?

• Green leafy vegetables

• Milk

• Liver

• Cereals

Which vitamin enhances the absorption of iron?

• Vitamin A

• Vitamin B12

• Vitamin C

• Vitamin D

Where in the digestive system is iron primarily absorbed?

• Esophagus

• Duodenum

• Stomach

• Colon

What is the role of hepcidin in iron metabolism?

• Transports iron in the blood

• Increases iron absorption

• Decreases iron absorption

• Converts iron to ferritin

What is the transport form of iron in the blood?

• Hemoglobin

• Transferrin

• Hemosiderin

• Ferritin

What does TIBC stand for in iron metabolism?

• Total Iron-Binding Coefficient

• Total Iron-Binding Capacity

• Total Iron-Binding Concentration

• Total Iron-Binding Content

Which storage form of iron is more soluble?

• Hemoglobin

• Hemosiderin

• Transferrin

• Ferritin

How many iron atoms can one molecule of ferritin store?

• 4000

• 3000

• 2000

• 1000

What happens to ferritin levels in iron overload?

• They decrease

• They fluctuate

• They remain unchanged

• They increase