macintosh
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A 54-year-old female undergoes thryroidectomy for several thyroid nodules that were suspicious for malignancy on fine needle aspiration. While ligating the supenor thyroid artery, the surgeon accidental severs a nearby nerve. Which of the following muscles is denervated as a result of this injury?
c A Thyroarytenoid
c B Lateral cricoarytenoid
c C. Posterior cncoarytenoid
c D. Cricothyroid
c E Aryepiglolticus
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| jean robert
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D
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| maoudoody
Forum Elite
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external laryngeal nerve supplies cricothyroid muscle
others with recurrent- injured with ligation of inf thyroid
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| maoudoody
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i hope they stop in the exam at this level cause if they ask about the actions of these muscles or complete versus partial injury of recurrent laryngeal i will be devastated!!!
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| macintosh
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External laryngeal branch of the superior larygeal supplies the cricothyroid. As far as its action is concerned, I think it relaxes the vocal cords, so changes the pitch of the voice. Do correct me if i am wrong though.
The corect answer to the above question is off course D
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