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

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
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
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

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...
View Full Document

This note was uploaded on 01/29/2012 for the course SCIE SYG2000 taught by Professor Bernhardt during the Fall '10 term at Broward College.

Page1 / 2

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

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online