Re: lung 2
usmlefever3 - 11-18-09 08:19

1.what are the two main factors in gaseous exchange in the lungs?/?
pressure gradient of gas,surface area and thickness of membrane


2.what are two important factors that affect the alveolar PCO2??
rate of ventilation and alveolar PO2

Re: lung 2
conym5 - 11-18-09 10:24

pressure gradient of gas,surface area and thickness of membrane for gaseous exchange is correct..
but for factors that affect the alveolar PCO2...rate of ventilation is correct, what is the other factor affecting PCO2???

Re: lung 2
rohini001 - 01-10-10 11:00

The two important factors affecting the alveolar Pco2 is alveolar ventilation and metabolic CO2 production .In this the alveolar PCO2 is directly propotional to metabolic CO2 production and inversly to alveolar ventilation

Re: lung 2
conym5 - 01-11-10 09:10

what is the other factor affecting PCO2 ??? ...metabolic process and their rate of actions in the body..
answer for first question is correct...pressure gradient of gas,surface area and thickness of membrane.

Re: lung 2
mtniharika - 02-28-10 02:28

The factors that determine the values for alveolar PO2 and PCO2 are:
The pressure of outside air
The partial pressures of inspired oxygen and carbon dioxide
The rates of total body oxygen consumption and carbon dioxide production
The rates of alveolar ventilation and perfusion
The alveolar pO2 is not routinely measured but is calculated from blood gas measurements by the Alveolar gas equation.

Re: lung 2
babbu5508 - 06-23-10 13:44

The total amount of carbon dioxide transported in the body is approximately 49 ml CO2/100 ml for arterial blood and 54 ml CO2/100 ml for venous blood (Fig. 4 2). Carbon dioxide is transported in the blood in three forms: as bicarbonate (the greatest amount), combined with hemoglobin and other proteins (carbamino compounds), dissolved. These three forms of CO2 are in equilibrium with one another

Re: lung 2
bingousmle - 06-30-10 21:11

pressure gradient of gas,surface area and thickness of membrane andrate of ventilation and alveolar PO2 are the possible answers..

Re: lung 2
drranjithkumar - 07-18-10 11:53

surface area nd membranethickness is ans fr qn no 1 nd ans fr qn 2 is body metabolisam nd alveolar ventilation if bm is constant tr is inverse releation ship btwn av and alveolar pco2