Exam 2 bio 139 - Complete Questions and Answers

Exam 2 bio 139 - Complete Questions and
Answers
Boyle's Law - -the pressure of a given quantity of gas is inversely proportional to its
volume

-Charles' Law - -the volume of a given quantity of gas is directly proportional to its
absolute temperature

-Dalton's Law - -The total pressure of a gas mixture is equal to the sum of the pressure
that each gas would exert independently

-Henry's Law - -the solubility of a gas in a liquid is directly proportional to the partial
pressure of that gas on the surface of the liquid

-Flow according to respiration - -Palv-Patm/R (resistance)

-Boyle law equation - -P1V1=P2V2

-transpulmonary pressure - -the difference in pressure from inside to outside of the lung

-intraplueral pressure - -pressure in the plueral cavity surrounding the lungs, always
slightly negative to atmosphere, creating suction for expansion and contraction

-Ptp=Palv-Pip - -forces acting to expand lungs

-intraplueral pressure during rest - -negative (less than Patm)

-Values at rest - --Patm: 0mmHg/0cmh20
-Pip:-4mmHg/-5cmh20
-Palv=0mmHg/0cmh20
-Ptp=4mmHg/5cmh20
-Flow? F=Palv-Patm/R=0 So, no flow

-at rest, the lungs are held open by the ____ - -Pip

-Mechanics of quiet inspiration - -~increased volume---> decrease in Pip (more
negative)-->increase in Ptp-->Increase volume of lungs-->decrease in Palv--> Palv<Patm, so
air will rush into lungs

-Values during inspiration - --Patm:0mmHg/0cmh20
-Pip:-6mmHg/-8cmh20
-Palv:-1mmHg/-1cmh20
-Ptp:5mmHg/7cmh20