Phonation anatomyR students-2

Phonation anatomyR students-2 - Phonation ANATOMY LARYNX De...

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Phonation ANATOMY 1. LARYNX •. Description: is musculocartilaginous structure •. Location: lies on top or/superior to trachea located midline on anterior neck Palpate thyroid notch which is anterior attachment of the vocal folds. Thus larynx located between the hyoid bone (superiorly) and trachea (inferiorly) located at about the level of the 3rd, 4th, 5th, & 6th cervical vertebrae This position may vary according to:
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MEP P s Respiratory Laryngeal Supragl ottal Air from lungs is  perturbed by the  opening and closing  of the approximated  vocal folds.
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From www.gbmc.org/voice/larynx/anatomyphysiologyofthelarynx.cfm
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The arrow is pointing at the…. A. Trachea B. Thyroid cartilage C. Epiglottis D. Cricoid cartilage
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Function : Biological It is a component of respiratory system, thus functions as protective device for lower airway. Acts to (1) prevent foreign objects from entering lungs, (2) prevents air from escaping the lungs, (3) forcefully expels foreign substances which threaten to enter larynx or trachea. Nonbiologic sound production only functions as sound generator when it is not fulfilling biological functions. It represents variable resistance to the flow of air. What do I mean by variable resistance? Vocal fold adduct to provide varying/changing amounts of resistance to outward flowing air.
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Sound Generation: A brief description Vocal folds Description: long bands of muscle tissue May be During quiet breathing, VFs are: Inhalation for speech occurs. Then exhalation (for speech) starts.
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Generation of air pulses Folds are e ither complete ly adducted (yet loose ly) or slightly less than completely adducted. Air flows out of lungs producing increasing pressure beneath folds. When subglottic pressure is sufficient, folds are blown apart A puff of air is released. Release of air results in sudden drop in pressure beneath folds. Elasticity of tissue, plus reduction of air press., causes folds to come together again. This is one cycle of vocal fold vibration. These air pulses excite the supralaryngeal air column so as to produce a complex tone . Usual rate in males = 125 cps, females = 210 cps, higher in children. cps = Slides are found at http://www.pitt.edu/~crosen/voice/anatomy2.html http://www.hopkinsmedicine.org/voice/disorders.html
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http://www.pitt.edu/~crosen/ voice/anatomy2.html
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Supportive Framework for Larynx 1. Hyoid bone : U-shaped Unique in that not attached directly to any other bone in skeleton, rather bound in place by network of muscles and ligaments Muscles which attach to hyoid bone and suspend it comprise the hyoid sling muscles Muscle from tongue* and mandible above, muscles & ligaments from temporal bone approach from behind and superiorly; while extrinsic laryngeal muscles from below attach to hyoid, as do muscles from sternum and clavicle. Hyoid is a highly mobile structure
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Phonation anatomyR students-2 - Phonation ANATOMY LARYNX De...

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