ANATOMY 1 Lecture Notes - Lecture 11: Cricoid Cartilage, Macrophage, Bronchiole

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Funnel-shaped tube starting @ internal nares and extending to cricoid cartilage. Wall = skeletal muscles, lined with mucous membrane. Contraction of skeletal muscle aids in swallowing. From posterior nasal cavity to soft palate. One opening into oropharynx two openings for auditory tubes (eustachian tubes) Exchanges small amounts of air w/ auditory tubes to equalize air lined with pseudostratified ciliated columnar epithelium pressure between middle ear and atmosphere. Anterior opening fauces lined w/ nonkeratinized stratified squamous epithelium. Contains palatine tonsils and lingual tonsils laryngopharynx. @ inferior end, opens into esophagus and larynx. Arch-shaped muscular partition between nasopharynx and oropharynx. Posterior portion of the roof of the mouth. Short passageway that connects laryngopharynx w/ trachea. 9 pieces of cartilage (laryngeal cartilages) thyroid, epiglottis, cricoid, arytenoid (paired), cuneiform (paired), and corniculate (paired) Arytenoid most important influence positions and tensions of the vocal folds.

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