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10 cards from this deck
Large size & high metabolic rates require efficient O₂/CO₂ exchange
Lungs
Nasal cavity→Trachea→Bronchi→Bronchioles→Alveoli
Warms, filters, and moistens air
C-shaped cartilage rings
Cilia sweep mucus up; goblet cells produce mucus that traps dust/pathogens
Constrict & dilate to control airflow
100−300,muextm100-300,mu ext{m}100−300,muextm
Alveolar membrane
Prevent water loss & air can't support delicate structures
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