Erythrocytes
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9 Terms
What is the primary function of erythrocytes?
Erythrocytes transport 02 and CO2.
What is the shape of erythrocytes, and why is it important?
Erythrocytes are biconcave (disc-shaped) to provide greater surface area for gas exchange.
What do the plasma membranes of erythrocytes contain?
The plasma membrane has antigens (glycocalyx).
What is the lifespan of an erythrocyte?
The lifespan of an erythrocyte is 3-4 months.
What organelles do erythrocytes lack?
Erythrocytes are devoid of most organelles, including mitochondria, so they can't use up the 02 they carry.
What is the role of carbonic anhydrase (CAH) in erythrocytes?
Carbonic anhydrase facilitates the conversion of
CO2 + H2O ↔ H2 CO3 ↔ HCO3- + H+
What is the function of hemoglobin in erythrocytes?
Hemoglobin (15g/100mL) carries 02 in the cytoplasm of erythrocytes.
What are the components of hemoglobin?
Hemoglobin consists of 4 protein chains and a heme molecule with iron that binds to 02.
What is the difference between HbA and HbF?
HbA: Adult hemoglobin
HbF: Fetal hemoglobin, which binds 02 more tightly than HbA.
Note 
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