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Questions and Answers
What enzyme found on RBCs catalyzes the reversible reaction between CO2 and H2O to form carbonic acid?
What enzyme found on RBCs catalyzes the reversible reaction between CO2 and H2O to form carbonic acid?
- Carbonic anhydrase (correct)
- Lipase
- Hemoglobin
- Amylase
What is the major function of red blood cells (RBCs)?
What is the major function of red blood cells (RBCs)?
- To produce hemoglobin for the blood
- To transport carbon dioxide from lungs to the tissues
- To act as an acid-base buffer in the blood (correct)
- To transport oxygen from tissues to the lungs
What is the average number of red blood cells per cubic millimeter in normal men?
What is the average number of red blood cells per cubic millimeter in normal men?
- 5,200,000 (±300,000) (correct)
- 4,700,000 (±300,000)
- 4,400,000 (±300,000)
- 6,000,000 (±300,000)
What is the average thickness of red blood cells at the thickest point?
What is the average thickness of red blood cells at the thickest point?
Where are primitive nucleated red blood cells produced in the early weeks of embryonic life?
Where are primitive nucleated red blood cells produced in the early weeks of embryonic life?
Where are RBCs exclusively produced during the last month of gestation and after birth?
Where are RBCs exclusively produced during the last month of gestation and after birth?
At what age does the marrow of long bones stop producing RBCs?
At what age does the marrow of long bones stop producing RBCs?
What type of cell is responsible for forming all the cells of the circulating blood?
What type of cell is responsible for forming all the cells of the circulating blood?
What is the principal stimulus for red blood cell production in low oxygen states?
What is the principal stimulus for red blood cell production in low oxygen states?
Where is about 90 per cent of all erythropoietin formed?
Where is about 90 per cent of all erythropoietin formed?
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