LING 2604 Lecture Notes - Lecture 2: Thyrohyoid Muscle, Endolymph, Basilar Membrane
29 Jan 2018
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Lecture two: anatomy and physiology of verbal communication. The same structures that allow us to breathe, eat and drink have been also used to produce verbal communication. Key piece of diagnostic information = how well does the individual cope with breathing and eating. Initiates ability to expand your chest: negative pressure in your lungs. Breathing for speech: short inspiration/prolonged expiration, postural support. Cartilages (3 + 1: thyroid (shield, moves up and down, open at the back, cricoid (ring, arytenoids (pyramid shaped, sit on the cricoid, epiglottis (leaf, behind the tongue. Nerve supply = vagus (10th cranial nerve: largest nerve in the body. Intrinsic: adductors (close the glottis, abductors (open the glottis) Extrinsic: (cid:862) trap(cid:863) (cid:373)us(cid:272)les, hold the larynx in position suspended from the hyoid bone (allows for lift/descent in the neck) Bernoulli effect (van den berg 1958: air moving at a high speed has a reduced pressure, airplane wings, bird wings, pulls the vocal cords together.
