Head & Neck · NEET PG Preparation Anatomy
During a thyroidectomy, a surgeon accidentally ligates the nerve running intimately with the superior thyroid artery on the surface of the inferior c…
Practice question from Head & Neck (NEET PG Preparation Anatomy), with the correct answer and a step-by-step solution.
hard · MCQ · Q-07F58B
During a thyroidectomy, a surgeon accidentally ligates the nerve running intimately with the superior thyroid artery on the surface of the inferior constrictor muscle. Which of the following clinical findings is expected?
- A.Inability to tense the vocal cords resulting in a monotonous voiceCorrect answer
- B.Total loss of sensation below the vocal cords
- C.Cadaveric position of the vocal cord
- D.Difficulty in swallowing due to pharyngeal paralysis
Solution
The external branch of the superior laryngeal nerve runs alongside the superior thyroid artery and supplies the cricothyroid muscle. Injury leads to paralysis of the cricothyroid, resulting in an inability to tense the vocal cords and a voice that tires easily with loss of high-pitched sounds.
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