Partial pressures

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Department
Biomedical Science
Course
BMS 420
Professor
Charles Miller
Semester
Fall

Description
5 November Parasympathetic – constrict Sympathetic – dilator In normal lungs, ΔV Lnly begins to fall off at high frequencies. In lungs with a high τ, the ΔVLbegins to fall off even at fairly low respiratory frequencies. Time constant – τ About 2 seconds Equal pressure point – airway pressure is same as interpleural pressure Purse lips – increase resistance, increase pressure Maintains more open airways during exhalation At a VLof 5 liters, flow increases steadily as we increase effort. Flow - V́ (liters/second) Terms Deoxyhemoglobin/oxyhemoglobin Oxygen tension (partial pressure) Oxygen hemoglobin dissociation curve Oxygen carrying capacity (1.35 mL O /g2am Hb) Oxygen content/total oxygen con
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