In the plateau region of the Hb-O? curve, a large decrease in $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ results in a small decrease in Hb saturation, whereas in the steep portion of the curve, a small decrease in $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ results in a large decrease in percent Hb saturation.

Question

Quizplus · Accepted Answer

This statement is true. The plateau region of the Hb-O₂ curve represents high levels of oxygen saturation where a decrease in $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ results in only a small decrease in Hb saturation since most of the Hb molecules are already bound to oxygen. On the other hand, the steep portion of the curve represents the lower levels of oxygen saturation where Hb has a higher affinity for oxygen and a small decrease in $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ can result in a large decrease in percent Hb saturation.

In the Plateau Region of the Hb-O? Curve, a Large PO2\mathrm { P } _ { \mathrm { O } _ { 2 } }PO2​​

In the Plateau Region of the Hb-O? Curve, a Large $\mathrm { P } _ { \mathrm { O } _ { 2 } }$