Plateau oxygen dissociation curve signifies
In its most simple form, the oxyhemoglobin dissociation curve describes the relation between the paial pressure of oxygen (x axis) and the oxygen saturation (y axis). Hemoglobin's affinity for oxygen increases as successive molecules of oxygen bind. ... The P50 is a conventional measure of hemoglobin affinity for oxygen Ref: guyton and hall textbook of medical physiology 12 edition page number:354,355,356
No oxygen is available for binding to Hb
No Hb molecule is available to bind O2
All oxygen is released to tissues
Carboxy-Hb formation
Respiratory system