Respiratory Anatomy

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Respiratory Anatomy
2012-09-05 21:59:59

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  1. Name in order the flow of air from the environement into the blood.
    Environment, Anterior nares, nasal cavity, paranasla sinuses, posterior nares, nasopharynx, oropharynx, laryngopharynx, larynx, trachea, main bronchus, lobar bronchus, segmental bronchus, smaller bronchi, bronchiole, terminal bronchiole, respiratory bronchiole, alveolar duct, alveolar units
  2. How are the air conducting airways held open?
    By incorporating strcutures made of hard tissue such as bones and cartilage into the airway walls to stiffen them and prevent them from collapsing inwards EXCEPT in the case of the pharynx, which is kept patent by a muscular wall
  3. What are the functions of the nasal cavities?
    CONDUCTANCE, AIR PREP, RESONANCE, SMELL: conduct air, warm, moisten and trap dirt, provide resonance chamber of speech, have olfactory receptors in mucosa of upper third of medial and lateral walls
  4. name the structural walls of the nasal cavity
    medial wall, lateral walls, floor and roof
  5. components and locations of medial nasal wall or nasal septum
    anterior-most septal cartilage, perpendicular plate of ethmoid continuous with the cribriform plate and vomer bone inferiorly all covered by mucosa
  6. components and locations of lateral walls of nasal cavity
    anteriorly made of cartilage - lateral process of septal cartilage superiorly and major alar cartilage inferiorly; small uppermost part nasal bone, frontal process maxilla, with nasla conchae or turbinate bones