Podcast
Questions and Answers
What is the major function of red blood cells?
What is the major function of red blood cells?
- Circulating free hemoglobin in plasma
- Expelling carbon dioxide into the atmosphere
- Producing carbonic anhydrase for acid-base balance
- Transporting hemoglobin to carry oxygen (correct)
What happens when hemoglobin is free in the plasma of human beings?
What happens when hemoglobin is free in the plasma of human beings?
- It converts carbon dioxide to water in the bloodstream
- It forms carbonic acid in the lungs
- About 3% of it leaks through capillary membranes into tissue spaces or glomerular filtrate (correct)
- It increases the rate of oxygen delivery to tissues
Besides transporting hemoglobin, what other function do red blood cells perform?
Besides transporting hemoglobin, what other function do red blood cells perform?
- Expel excess bicarbonate ions into the atmosphere
- Contain a large quantity of carbonic anhydrase for CO2 transport (correct)
- Act as a storage site for excess oxygen
- Circulate free proteins in the plasma
What makes it possible for the blood to transport enormous quantities of CO2 from the tissues to the lungs?
What makes it possible for the blood to transport enormous quantities of CO2 from the tissues to the lungs?
What is responsible for most of the acid-base buffering power of whole blood?
What is responsible for most of the acid-base buffering power of whole blood?
What is the enzyme present in red blood cells that catalyzes the reversible reaction between carbon dioxide and water?
What is the enzyme present in red blood cells that catalyzes the reversible reaction between carbon dioxide and water?
In which form is carbon dioxide transported from the tissues to the lungs in the blood?
In which form is carbon dioxide transported from the tissues to the lungs in the blood?
What happens to hemoglobin when it is free in the plasma of human beings?
What happens to hemoglobin when it is free in the plasma of human beings?
What percentage of hemoglobin leaks through the capillary membrane into tissue spaces when it is free in the plasma of human beings?
What percentage of hemoglobin leaks through the capillary membrane into tissue spaces when it is free in the plasma of human beings?
In which animals does hemoglobin circulate as free protein in the plasma, not enclosed in red blood cells?
In which animals does hemoglobin circulate as free protein in the plasma, not enclosed in red blood cells?
Flashcards
Red blood cell function
Red blood cell function
Transport oxygen using hemoglobin.
Free hemoglobin in plasma
Free hemoglobin in plasma
Leaks out of capillaries into tissue spaces; 3% leakage.
CO2 transport in blood
CO2 transport in blood
Carbonic anhydrase catalyzes CO2 conversion to bicarbonate.
Blood acid-base buffer
Blood acid-base buffer
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Carbonic anhydrase function
Carbonic anhydrase function
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CO2 transport form
CO2 transport form
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Free hemoglobin leakage %
Free hemoglobin leakage %
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Hemoglobin plasma circulation
Hemoglobin plasma circulation
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Hemoglobin leakage (tissues)
Hemoglobin leakage (tissues)
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Carbonic anhydrase location
Carbonic anhydrase location
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