Larynx · NEET PG Preparation ENT
A 45-year-old male presents with hoarseness of voice for 3 months. Indirect laryngoscopy reveals a left vocal cord palsy with the left vocal cord fix…
Practice question from Larynx (NEET PG Preparation ENT), with the correct answer and a step-by-step solution.
medium · MCQ · Q-421B73
A 45-year-old male presents with hoarseness of voice for 3 months. Indirect laryngoscopy reveals a left vocal cord palsy with the left vocal cord fixed in the paramedian position. Which of the following nerves is primarily responsible for the position of this paralyzed vocal cord?
- A.Internal laryngeal nerve
- B.External laryngeal nerve
- C.Recurrent laryngeal nerveCorrect answer
- D.Glossopharyngeal nerve
Solution
The recurrent laryngeal nerve supplies all the intrinsic muscles of the larynx except the cricothyroid. In complete recurrent laryngeal nerve palsy, the vocal cord typically assumes a paramedian (cadaveric) position due to the unopposed action of the cricothyroid muscle (supplied by the external laryngeal nerve).
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