Calculation of reabsorption and secretion rates

- The reabsorption or secretion rate is the difference between the amount filtered across the glomerular capillaries and the amount excreted in urine. It is calculated with the following equations Filtered load GFR x plasma Excretion rate V x urine Reabsorption rate Filtered load - Excretion rate Secretion rate Excretion rate - Filtered load - If the filtered load is greater than the excretion rate, then net reabsorption of the substance has occurred. If the filtered load is less than the...

The mean values for arterial Po2 and Pco2 do not change during exercise

- Arterial pH does not change during moderate exercise, although it may decrease during strenuous exercise because of lactic acidosis. 3. On the other hand, venous Pco2 increases during exercise because the excess C02 produced by the exercising muscle is carried to the lungs in venous blood. Table 4-7. Summary of Respiratory Responses to Exercise 02 consumption C02 production Ventilation rate T (matches 02 consumption C02 production) No change No change in moderate exercise 4- in strenuous...