Which of the following is NOT true for the plateau portion of the O₂-Hb curve? A) It is in the blood-PO₂ range that exists at the pulmonary capillaries. B) It means that haemoglobin becomes almost nearly saturated in the lungs unless the pulmonary capillary PO₂ falls below 60 mmHg. C) It is in the blood-PO₂ range that exists at the systemic capillaries.

Question

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The plateau portion of the O₂-Hb curve is not present in the blood-PO₂ range that exists at the systemic capillaries. Instead, it is only present in the blood-PO₂ range that exists at the pulmonary capillaries. Choice A and B are both true statements about the plateau portion of the O₂-Hb curve.

Which of the Following Is NOT True for the Plateau