Class Notes (834,037)
Canada (508,290)
PEDS200 (38)
Lecture

Gas Exchange

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Department
Physical Education and Sport
Course
PEDS200
Professor
Dan Syrotuik
Semester
Fall

Description
Gas ExchangePartial Pressure Atmospheric pressure x concentration of gasLung PAO2100105mmHg PACO2 40mmHgHenrys Law Amount gas dissolved in fluid depends on pressure difference between air and fluid and solubility of gasP is driving force for diffusion how much gas is taken up depends on solubilityAt tissue arterial O2 diffuses into tissue and CO2 diffuses out of tissueComplete gas exchange takes 03035savO2 difference Difference in O2 content between arterial and mixed venous bloodRepresents O2 extractiontissue level per 100ml bloodRest 50ml100ml bloodMax exercise 15ml100ml bloodCO2 more soluble than O2 transported byDissolved
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