MEATUSES - Narrow air passage beneath each conchae, GLOTTIS - Vocal cords, TRACHEOSTOMY - Insert tube to allow airflow, SCALENES - Hold first pair of ribs stationary, PNEUMOTAXIC CENTER - Sends continual inhibitory impulses to inspiratory center, SPIROMETER - Measure ventilation, OXYGEN - Gas, OXYHEMOGLOBIN - HbO2, CHRONIC OBSTRUCTIVE PULMONARY DISEASE - Reduce pulmonary compliance and vital capacity, SQUAMOUS-CELL CARCINOMA - Dense swirls of keratin replace functional respiratory tissue,

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