Anatomy

Respiratory System

Henry’s Law

Dalton’s Law

Atmospheric Pressure = 760 mmHg

Atmospheric Pressure = PN2 + PO2 + PCO2 + PH2O

597(PN2) + 159(PO2) + .3(PCO2) + 3.7(PH2O) = 760 mmHg

760 x .786 = 597 760 x .209 = 159 760 x .0004 = .3 760 x .005 = 3.7

Atmospheric Pressure = 760 mmHg

Atmospheric Pressure = PN2 + PO2 + PCO2 + PH2O

597(PN2) + 159(PO2) + .3(PCO2) + 3.7(PH2O) = 760 mmHg

760 x .786 = 597 760 x .209 = 159 760 x .0004 = .3 760 x .005 = 3.7

Sea level pressure = 760 mm Hg Sea level PO2 = 159 mm Hg

Everest summit pressure = 253 mm Hg Everest summit PO2 = 43.1 mm Hg

Atmospheric Pressure = 760 mmHg

Atmospheric Pressure = PN2 + PO2 + PCO2 + PH2O

597(PN2) + 159(PO2) + .3(PCO2) + 3.7(PH2O) = 760 mmHg

760 x .786 = 597 760 x .209 = 159 760 x .0004 = .3 760 x .005 = 3.7

Arterial blood at sea level - 97% saturated

Venous blood leaving peripheral tissues at sea level - 75% saturated

Arterial blood at summit of Everest - 77% saturated

The Respiratory System • Image from 1601 text, De Vocis

Auditusque Organis Historia Anatomica, by Giulio Casserio

• Professor of head and neck anatomy at University of Padua

• William Harvey was one of his students

• How many cardiorespiratory structures can you identify?