external and internal resp Flashcards
what is another name for external respiration?
pulmonary respiration
what is another name for internal respiration?
tissue respiration
Exchange of O2 and CO2 between air in alveoli and blood in pulmonary capillaries
external respiration
function of external respiration
Converts deoxygenated to oxygenated blood, gets rid of CO2 from blood to air
when the pO2 is higher in the alveoli than that of deoxygenated blood, what does oxygen do?
it will enter the blood
compare the Palv and PO2 of the doexygenated blood when oxygen enters the deoxygenated blood
PO2 of alv > PO2 of the deoxygenated blood
O2 diffuses from alveoli into blood
Palv 104 > P O2 blood 40
Compare the pCO2 in the deoxygenated blood to that of the pCO2 of the alveoli
pCO2 deoxygenated blood > pCO2 of alveoli
CO2 diffuses from deoxygenated blood into alveoli
pCO2 deox blood 45 > pCO2 alveoli 40
Which is more soluble: CO2 or O2
CO2
this is why the pressure gradient difference doesn’t have to be as large
Exchange of O2 and CO2 between blood and tissue they serve
internal respiration
what is the function of internal respiration
Oxygenates tissues and removes CO2 produced during aerobic respiration.
when pO2 blood > pO2 tissues, what happens?
Oxygen will diffuse into the tissues
pO2 blood 95 > pO2 tissue 40
when pCO2 tissues > pCO2 blood, what happens?
CO2 will diffuse into the blood.
pCO2 tissue 45 > pCO2 blood 40