Cross Sectional Anatomy Chapter 5 Neck Pharynx - ✔✔ • Funnel shaped tube • Extends from skull base to esophagus Nasopharynx - ✔✔ • Extension of nasal cavities • Pharyngeal tonsils -adenoids • Eustachian tube -connects ear to nasopharynx Oropharynx - ✔✔ • Posterior extension of oral cavity • Palantine tonsils -Lateral walls • Lingual tonsils -base of tongue • Valleculae -two pouch -like openi ngs at base of tongue and epiglottis Laryngopharynx - ✔✔ • Between hyoid bone and esophagus • Piriformis sinuses -within lateral walls LARYNX - ✔✔ Bony skeleton surrounds and protects vocal cords Continues to trachea How many cartilages in the Larynx - ✔✔ 9 Laryngeal cartilages 3 paired 3 unpaired Thyroid - ✔✔ • Largest, most superior • Lt/Rt lamina unite anteriorly to from laryngeal prominence Epiglottis - ✔✔ • Elastic, has movement • Folds over larynx to prevent LARY NX 2 Arytenoid cartilages - ✔✔ • Posterior, on top of cricoid 2 Corniculate cartilages - ✔✔ • Small, horn -shaped • Articulates with superior surface of arytenoid 2 Cuneiform cartilages - ✔✔ • Lateral aspect of arytenoid Cricoid cartilage • Complete ring for ms base of larynx • Marks junction between larynx and trachea and beginning of esophagus Vestibular folds - ✔✔ - False vocal cords • Superior pair of ligaments • Not involved with sound V like Inner structures of the Larynx - ✔✔ Vestibular folds True vocal cords Glottis Aryepiglottic folds True vocal cords - ✔✔ • Inferior pair of ligaments • Involved with sound Glottis - ✔✔ • Opening created when vocal cords are in relaxed position during quiet respiration • Involved with sound
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