APA 2312 Lecture Notes - Lecture 18: Hemoglobin, Bohr Effect, Respiratory Minute Volume
4 Apr 2016
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Document Summary
Inspiraion involves external intercostals and diaphragm (pushes down and enlarges thoracic cavity). Vital capacity: idal volume + inspiratory & expiratory reserve volume. Complete capacity of air, from breathing in to breathing out. Calculated as (idal volume anatomic dead space) x respiratory rate. 2. 8l 0. 15l = 2. 65l x 28 breaths/min. Gas exchange if you breathe deeply & slowly. Alveolar venilaion: how much oxygen goes into area where gas exchange takes place. Respiratory system adapts to changing oxygen demands by varying. The volume of air moved per breath (idal volume, vt) 810l of air/ 12 min = 67. 5l per min. 67. 5l per min / 2. 25l per breath = 30 breaths per min. Only a part of respiratory minute volume reaches alveolar exchange surfaces. Volume of air remaining in conducing passages is anatomic dead space (assume. Occurs by passive difusion across the alveolar wall. Describes the pressure of a paricular gas within a mixture. Concentraion does not change with pressure (e. g. alitude)
