The Plateau Portion of the O?-Hb Curve
A)is in the Blood-

Multiple Choice

The plateau portion of the O?-Hb curve

A) is in the blood- $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ range that exists at pulmonary capillaries
B) means that Hb becomes nearly saturated in the lungs unless pulmonary capillary $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ falls below 60 mm Hg
C) is in the blood- $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ range that exists at the systemic capillaries
D) is both a and b
E) is both b and c