0
No, it is higher or the CO2 would not move out of the lungs.
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
Explain the functional importance of the partial vacuum that exists in the intrapleural space?
If not present (and the intra-alveolar pressure equaled atmospheric pressure) the lungs would collapse.
The relative PO2 and PCO2 in pulmonary arteries and veins and systemic arteries and veins?
Pulmonary artery/Systemic veins PCO2 = 45 PO2 = 40 Pulmonary vein/Systemic arteries PCO2 = 40 PO2 = 100
What is the normal range of PCO2 in kPa?
5.3
Is Alveolar recoil lead to a decrease in intr-alveolar pressure?
NO
The exchange of gases between alveolar air and blood is due to?
it diffuses thru the alveolar cappilary membrane
Exchange of gases in the lungs?
blood entering the lungs has a partial pressure of oxygen (PO2) of 40 mmHg and a partial pressure of carbon dioxide (PCO2) of 46 mmHg; alveoli, on the other hand, have a PO2 of 105 mmHg and a PCO2 of 40 mmHg. As the blood moves past the alveoli, oxygen and carbon dioxide will diffuse down their respective partial pressure gradients. Oxygen will move from the alveolar space (PO2 of 105 mmHg) to the blood stream (PO2 of 40 mmHg). Carbon dioxide will move from the blood (PCO2 of 46 mmHg) to the alveolar space (PCO2 of 40 mmHg). As the blood leaves the alveolus, the PO2 and PCO2 will have essentially equilibrated with the alveolar air.
When intraalveolar pressure exceeds atmospheric pressure what happens?
intrapleural pressure exceeds atmospheric pressure, but lungs don't collapse because intra-alveolar pressure increases, too (4 mmHg pressure gradient stays same)
Explain the functional importance of the partial vacuum that exists in the intrapleural space?
If not present (and the intra-alveolar pressure equaled atmospheric pressure) the lungs would collapse.
What regulates activities?
pco2
The relative PO2 and PCO2 in pulmonary arteries and veins and systemic arteries and veins?
Pulmonary artery/Systemic veins PCO2 = 45 PO2 = 40 Pulmonary vein/Systemic arteries PCO2 = 40 PO2 = 100
When PCO2 declines bronchioles?
constrict
What type of membrane used in po2 and pco2 electrode?
Teflon is used for the membrane of pco2 electrodes as it allows for the diffusion of co2 but not ions.
What gas is the major regulator of respiration?
PCO2
What are the units for pCO2?
mm Hg (mercury)
What is the normal range of PCO2 in kPa?
5.3
What effect does surface area have on evaporation?
The greater the surface area, the greater the rate of evaporation under identical atmospheric conditions.
What produces surfactant?
type II alveolar cells
