CSB346 Lecture 2

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Department
Cell and Systems Biology
Course
CSB346H1
Professor
John Peever
Semester
Winter

Description
CSB346 Lecture 2: Minute ventilation: 6000 ml/min Alveolar ventilation: 4200 ml/min 4200  x 0.21 = 882ml O  2only ~250ml is used and enters the blood) 24hrs/day   x  60mins/hr  x 250ml/min =  360L/day (DAILY O  CONS2MPTION) Minute Ventilation: V E= tidal volume   x  respiratory rate     = 500ml/breath  x 12 breaths/min = 6000ml/min Alveolar Ventilation: V  = V   ­  (dead space  x  resp. rate) A E Rate of transport depends on: ­ Conc. gradient ­  Surface area ­ Permeability and distance of the membrane O2 (mmHg) CO  2mmHg) Atmospheric air 160 0.3 Alveolar air 100 40 Pulmonary vein 100 40 Systemic arteries 100 40 Cells 40 46 Systemic veins 40 46 Pulm. arteries 40
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