SPA 3101 Lecture Notes - Lecture 6: Subclavian Artery, Pharyngeal Muscles, Sternothyroid Muscle
14 Sep 2018
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Lecture notes: larynx, made up of cartilages, laryngeal cartilages are the primary supportive components of the larynx. It aids in maintaining an open airway: but without too much rigidity that might affect agile movements. It is not an actual part of the larynx: cricoid cartilage. Is greek for ring shaped: first trachea ring, aryepiglottic folds, cuneiforms live inside the edges here, remember, larynx muscles, the larynx include several muscles that achieve complex motions required for respiration, swallowing, speech and mechanical advantage. Insertion and origin points attach to laryngeal cartilage: extrinsic. Aid in laryngeal vestibute opening: larynx innervation: afferent!!! Because sensory!! who were thinking about vocal folds, but are random auxilliary: both sensory and motor innervation for the larynx is supplied by the vagus. Isln: esln, extrinsic superior laryngeal nerve, sends signals to cricothyoid, cricothyroid, only one innervated by sln, motor innervation to muscles from, recurrent laryngeal nerve (rln, and esln, sensory innervation zones divided by vocal folds:
