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I1 - a auditory(Eustachian tubes open here b pharyngeal...

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The Respiratory System I. General Anatomy of Respiratory System A. Divisions 1. Upper Respiratory Tract a. nose and throat 2. Lower Respiratory Tract a. larynx, trachea, bronchi, lungs B. Functions 1. pulmonary ventilation - inhaling and exhaling 2. external respiration - gas exchange lungs/blood 3. internal respiration - gas exchange blood/body II. Basic Structures A. Nose 1. external portion a. mainly cartilage attached to nasal bones b. external nares (nostrils) c. vestibules - just inside external nares 2. internal portion a. internal nares - connects nose to pharynx b. nasal septum - divides nasal cavity in two c. paranasal sinuses - cavities formed by cranium i. frontal, sphenoidal, maxillary, ethmoidal d. meatuses - passageways formed by conchae i. superior, middle, inferior e. olfactory region - above superior concha 3. FUNCTIONS a. warm and moisten air b. remove dust, debris, microbes c. assist in resonating sound from the larynx B. Pharynx (Throat) 1. nasopharynx - posterior to internal nasal cavity
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Unformatted text preview: a. auditory (Eustachian) tubes - open here b. pharyngeal tonsil (adenoid) 2. oropharynx- posterior to oral cavity a. fauces - opening from the mouth The Respiratory System b. palantine and lingual tonsils 3. laryngopharynx- most inferior portion a. larynx (voice box) located anteriorly b. esophagus located inferiorly C. Larynx (Voice Box) 1. 9 segments of cartilage a. unpaired - thyroid, epiglottic, cricoid b. paired - arytenoid, corniculate, cuneiform 2. thyroid cartilage (Adam's apple) 3. epiglottis- covers larynx to route food a. glottis - vocal folds (cords) for sound 4. cricoid cartlage- attaches larynx to trachea 5. arytenoid cartilage- attached to vocal folds 6. Voice Production a. ventricular folds (false cords) i. hold breath against thoracic air pressure b. vocal cords (true cords) ii. vibrate to produce different frequencies c. pharynx, mouth, sinuses, nose, tongue, lips iii. alter the sound...
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