6. In the oxygen transport model, a formula that fits reashn partial pressure) r

Question

6. In the oxygen transport model, a formula that fits reashn partial pressure) relationship between the concentration of blood is as follows: . a formula that fits reasonably well the measured O2 in bloo (10 points) C -c where c and P.are constants. (1) Assume that c,-c., cv-0.4c. c, c,-0.8c., kTc. 125 mmHg, and P* = 25 mmHg ca- Calculate the ventilation-perfusion ratio r. (2) What is the possible range for ca? Is it possible to fin at is the possible range for ca? Is it possible to find a value of r that maximizes Ca Explain

Explanation / Answer

1) First of all a ventilation perfusion ratio can be defined as it is the ratio used to acess the efficiency and adiquency of the matching of two variables in which one is the ventilations and the other is perfusion. where ventilation is the air that reaches the alveoli and the perfusion is blood that reaches alveoli.

so the ratio of ventilation to the air is we need to determine here and for that we have the formula as under-

=> ventilation/perfusion r = [(Ca-Cv)x8.63]/125xC

by putting the values we get = r= [(.8c-.4c)x8.63x25]/125xc

                                             =.690

2) the possible range for ca is varies in the range of .4 to .8 when the pressure is taken to 25 mmHg.

no it is not possible to find a values of r that maximize ca because if it heppen the value of ratio will be in negative and at the same time partial pressure and quantity of the air will also be in negative which is not possible in actual .

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