Podcast
Questions and Answers
What percentage of iron in the body is found in the blood?
What percentage of iron in the body is found in the blood?
- 90%
- 25%
- 50%
- 75% (correct)
Which form of iron is absorbed in the body?
Which form of iron is absorbed in the body?
- Ferrous (Fe++)
- Ferric (Fe++)
- Ferrous (Fe+) (correct)
- Ferric (Fe+)
What substance in the diet converts ferric to ferrous form to aid in iron absorption?
What substance in the diet converts ferric to ferrous form to aid in iron absorption?
- Oxalic acid
- Phytic acid
- Calcium
- Ascorbic acid (correct)
Which of the following inhibits iron absorption in the body?
Which of the following inhibits iron absorption in the body?
Where is iron absorbed from in the body?
Where is iron absorbed from in the body?
At which stage is iron absorption regulated rather than at excretion?
At which stage is iron absorption regulated rather than at excretion?
What substance is responsible for converting non-absorbable ferric iron into absorbable ferrous iron in the intestinal lumen?
What substance is responsible for converting non-absorbable ferric iron into absorbable ferrous iron in the intestinal lumen?
Which protein is involved in transporting bound iron from the intestinal lumen into the mucosal cell?
Which protein is involved in transporting bound iron from the intestinal lumen into the mucosal cell?
What is the temporary storage form of iron within the mucosal cell?
What is the temporary storage form of iron within the mucosal cell?
According to the mucosal block theory, what happens to iron absorption when the body's iron stores are adequate?
According to the mucosal block theory, what happens to iron absorption when the body's iron stores are adequate?
Which protein is responsible for converting ferrous iron to ferric iron in the plasma?
Which protein is responsible for converting ferrous iron to ferric iron in the plasma?
What is the role of erythropoietin in regulating iron absorption?
What is the role of erythropoietin in regulating iron absorption?
What happens at the gene level when iron concentration is high?
What happens at the gene level when iron concentration is high?
What is the function of ceruloplasmin in the blood?
What is the function of ceruloplasmin in the blood?
In which form does iron bind with apotransferrin to form transferrin in the blood?
In which form does iron bind with apotransferrin to form transferrin in the blood?
'Mucosal block theory' proposed by Granick suggests that _______ regulates the absorption of iron.
'Mucosal block theory' proposed by Granick suggests that _______ regulates the absorption of iron.
