NSE 22A/B Chapter Notes -Carnia, Nasal Septum, Nasal Cavity

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Module 2: oxygenation: explain the structure and function of the upper and lower respiratory tracts and the chest wall. Upper respiratory: nose, pharynx. the adenoids, tonsils, epiglottis, larynx and trachea lower respiratory tract: bronchi, the bronchioles, alveolar ducts and alveoli. All lower airway conducted in the lungs right lung divided into three lobes: upper, middle, lower left lung into 2 lobes: upper and lower chest wall: ribs, pleura, muscles of respiration. Nose: made of bone cartilage, divided into 2 nares by the nasal septum. Interior of nose is shaped into rolling projections called turbinates- that increase the surface area for warming and moistening air. Nasal cavity connects with the pharynx, a tubular passageway that is subdivided into three parts: nasopharynx, oropharynx, laryngopharynx. Breathing through the nasal passages provided protection for the lower airway. Nose is lined with mucous membrane and small hairs.

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