How does the presence of methemoglobin affect the oxygen-carrying capacity of blood?
A
Increases the oxygen-carrying capacity of blood
B
Decreases the oxygen-carrying capacity of blood
✓
C
Has no effect on the oxygen-carrying capacity of blood
D
Alters the shape of the oxyhemoglobin dissociation curve
Explanation
Methemoglobin is a form of hemoglobin that cannot bind oxygen, thereby reducing the overall oxygen-carrying capacity of blood.
Source
Robbins and Cotran Pathologic Basis of Disease
Hematology
Hematology: Hemoglobin and Oxygen Transport
Hematology: Hemoglobin and Oxygen Transport
Easy
MEDICAL
Confidence: high
