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Respiratory System (Disorders of the respiratory system (Chronic…

- - - - Air enters through external nares (nostrils). Nasal cavity (interior of nose) divided by nasal septum.
    - - Olfactory receptors located in mucosa on superior surface. rest lined w/ respiratory mucosa to moisten the air and trap incoming foreign particles. lateral walls have conchae
    - - Cavities within bones. frontal, sphenoid, ethmoid, maxillary bone. lighten the skull. resonace chambers for speech. produce mucus
    - - Muscular passage from nasal cavity to larynx Nasopharynx is the superior region behind nasal cavity, oropharynx middle region behind mouth, and laryngopharynx inferior region attached to larynx
  - - - connects larynx with bronchi. fairly rigid because of the c-shaped rings made of hyline cartilage to keep airway open at all times. Lined with ciliated mucosa
    - - Formed by division of trachea. Enters the lungs at hilus.
    - - Occupy most of thoracic cavity. Apex is near clavicle. Base rests on diaphragm. Each lung is divided into lobes by fissures (2 on left and 3 on right.