<Tr> <Td> UK = 25 </Td> <Td> USG = 1.01 </Td> <Td> UCr = 60 </Td> <Td> UO = 800 </Td> </Tr> <Tr> <Td_colspan="4"> PROTEIN / GI / LIVER FUNCTION TESTS: </Td> </Tr> <Tr> <Td> LDH = 100 </Td> <Td> TP = 7.6 </Td> <Td> AST = 25 </Td> <Td> TBIL = 0.7 </Td> </Tr> <Tr> <Td> ALP = 71 </Td> <Td> Alb = 4.0 </Td> <Td> ALT = 40 </Td> <Td> BC = 0.5 </Td> </Tr>

Why does the partial pressure of respiratory gases in inspired air differ from that of alveolar air