1431cv11 - exchange at the cellular level • air...

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11 Respiratory system • Respiration - exchange of oxygen and carbon dioxide between the cells of an organism and the external environment • External respiration - exchange in the alveoli • Internal respiration
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Unformatted text preview: - exchange at the cellular level • air movement -– nose or mouth - pharynx - larynx -trachea - 2 bronchi - bronchioles - alveoli • air is warmed, filtered and humidified (nose)...
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