BIO2A03-2011-L24 - Biology2A03209 Lecture24 RespirationII...

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Biology 2A03 - 209 Lecture 24 Respiration II
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2. Cellular respiration: e.g. C 6 H 12 O 6  +6 H 2 O+ 6O 2  === > 12H 2 O + 6CO +   38 ATP   1. Gas exchange: movement of O 2  from environment to  2   in opposite direction 
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Fig. 17-2 Conducting zone -  no gas exchange between  Respiratory  zone trachea primary  bronchi secondary bronchi tertiary bronchi larynx Anatomy of the respiratory tract Alveolar sac Alveoli Respiratory Bronchioles
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smooth muscle –prevents gas  exchange with blood Little cartilage or smooth  muscle - allows gas exchange  with blood Fig. 17-3 Anatomical features Differences in  wall thickness Important for gas exchange 30Mill alveoli – 100m 2  Surface Area 
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Important  Conducting Zone  Functions Larynx - phonation, guards entrance to trachea Smooth muscle can constrict/relax, varying resistance to air flow (bronchioles)
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This note was uploaded on 04/12/2011 for the course BIOL 2A03 taught by Professor Mccelland&dej during the Winter '11 term at McMaster University.

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BIO2A03-2011-L24 - Biology2A03209 Lecture24 RespirationII...

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