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Questions and Answers
What is the typical lifespan of human erythrocytes in circulation?
What is the typical lifespan of human erythrocytes in circulation?
- 60 days
- 120 days (correct)
- 150 days
- 90 days
What happens to senescent or worn-out RBCs in the body?
What happens to senescent or worn-out RBCs in the body?
- They are removed from the circulation by macrophages (correct)
- They are transported to the lungs for gas exchange
- They are broken down by enzymes in the bloodstream
- They are converted into white blood cells
What causes swelling or shape abnormalities in erythrocytes after 120 days of circulation?
What causes swelling or shape abnormalities in erythrocytes after 120 days of circulation?
- Changes in the cells' surface oligosaccharide complexes
- Neither A nor B
- Both A and B (correct)
- Defects in the membrane's cytoskeletal lattice
