CAPS 391 Lecture 27: Lecture 27 Summary
18 Nov 2015
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9 cartilages: cricoid cartilage: at the level of c6, arytenoid cartilage: attachment site of the vocal chords. 9 pairs of skeletal muscle (innervated by cn x) 2 folds formed by ligaments: vestibular (formed by vestibular ligament, true vocal (formed by vocal ligament) Inner space is divides in 3 by the folds: vestibule: above vestibular fold, ventricle (x2): between vestibule and vocal chords. Vocal chords leave a gap in the larynx while we breathe but they close the gap (due to skeletal muscles) while we talk. Trachea: cartilaginous tube in the superior mediastinum (from c6 to t4-5). Thymus and thyroid are in front of the trachea and esophagus is behind the trachea. Carina: hyaline cartilage at t4-5 where the trachea divides. Primary bronchus is wider, shorter and more aligned with the trachea) secondary bronchus (target a lobe of the lung) tertiary bronchus (target an individual segment within a lobe) (right one.
