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Superior Laryngeal Paralysis Video (31 sec)
Superior Laryngeal Nerve Paralysis
Paralysis of the Left
Superior Laryngeal Nerve
(Note the larynx is shifted to the right)
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This video shows the function  of a larynx with a left superior laryngeal nerve paralysis.  This paralysis usually does not significantly affect the speaking voice but often affects singing.  In this patient, the speaking voice is affected.  Note that the loss of the function of the left cricothyroid muscle results in the shifting of the supraglottis to the right and a shortening of the right true vocal cord.


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