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. 2021 Jan 21;130(5):1383–1397. doi: 10.1152/japplphysiol.00764.2020

Table 2.

Gas-specific values for a standard man used in the circulation and body gas store model

Tissue mT,CO2
mT,O2
mT,N2
Ṁo2
L(STPD)L−1Pa−1 L(STPD)L−1Pa−1 L(STPD)L−1Pa−1 L(STPD)L−1s−1
Adipose 1.05 × 10−5 10.78 × 10−7 5.67 × 10−7 1.08 × 10−5
Bone 1.54 × 10−5 2.27 × 10−7 1.28 × 10−7 2.88 × 10−5
Brain 1.54 × 10−5 2.27 × 10−7 1.35 × 10−7 57.57 × 10−5
GI tract 1.54 × 10−5 2.27 × 10−7 1.28 × 10−7 2.88 × 10−5
Heart 1.70 × 10−5 2.27 × 10−7 1.28 × 10−7 105.55 × 10−5
Kidneys 1.54 × 10−5 2.27 × 10−7 1.28 × 10−7 105.55 × 10−5
Liver 1.54 × 10−5 2.27 × 10−7 1.28 × 10−7 47.98 × 10−5
Lungs 1.54 × 10−5 2.27 × 10−7 1.28 × 10−7 2.88 × 10−5
Muscle 1.70 × 10−5 2.27 × 10−7 1.28 × 10−7 3.12 × 10−5
Skin 1.54 × 10−5 2.27 × 10−7 1.35 × 10−7 2.88 × 10−5
Blood * * 1.44 × 10−7
Rest of body 1.54 × 10−5 2.27 × 10−7 1.28 × 10−7 2.88 × 10−5
Citation (1, 6) (34) (3, 35–37) (24, 25)

mT,X, tissue gas dissociation gradient for gas X; Ṁo2, oxygen consumption; *, not constant and the values arise from the blood gas dissociation curves. At a standard mixed venous PCO2 of 6.1 kPa and PO2 of 5.3 kPa the values are approximately 3.12 × 10−5 L(STPD)L−1Pa−1 for CO2 and 2.26 × 10−5 L(STPD)L−1Pa−1 for O2, where STPD refers to standard temperature and pressure, dry.