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What is Least amount of co2 is in and explain in detail?
Ans. (a) Anatomical dead space-end inspiration phase(Ref: Ganong, 25th ed/p.630)Anatomical dead space containing atmospheric air at the end of inspiration will have the least amount of CO2 - because atmospheric air has negligible CO2 Anatomical dead space-end expiration phase: Here alveolar gas rich in CO2 occupies the Anatomical dead space dead space areaAlveolar air contains a mixture of O2 from the inspired air and CO2 which is continuously added to it to exhale out