Page 142 - Color_Atlas_of_Physiology_5th_Ed._-_A._Despopoulos_2003

A. O 2 dissociation curve: O 2 -carrying capacity
[HbO 2 ] [O 2 ]
in blood Increased O 2 capacity
Hb=180g/L
10 Normal O 2 capacity
150 8 Hb=150g/L
g/L mmol/L Reduced O 2 capacity
100 6 Hb=100g/L Binding and Transport of O 2 in Blood

4
50 O 2 capacity
2 Dissolved O 2
0 0
0 4 5.33 8 12 16 20 kPa
Mixed venous Arterial P O 2
Plate 5.12
0 50 100 150 mmHg
B. O 2 dissociation curve: O 2 saturation
Shift to left
CO 2 Temp.
1.0 DPG pH Saturation plateau
O 2 saturation, S O 2 0.6 CO 2 Temp.
0.8
Shift to right
DPG pH
0.5
0.4
Variable saturation
at same P O 2
0.2
O 2 half-saturation pressure
0
0 3.6 5.33 8 12 16 P O2 20 kPa
P 0.5 Mixed venous Arterial
C. O 2 and carbon monoxide (CO) dissociation curves
CO-Hb
At P O 2 = 13.3kPa
1.0

Saturation 0.5 Fetal Hb-O 2 Hb-O 2

O 2 -myoglobin O 2 -Met-Hb

0 129
0 5 10 kPa
P O 2 and P CO
Despopoulos, Color Atlas of Physiology © 2003 Thieme
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