A singer is finding difficulty raising the pitch of her voice. On examination, her vocal cords were depressed and bowing. Which of the following muscles is involved?

Options

1. Cricothyroid
2. Interarytenoid
3. Posterior cricoarytenoid
4. Lateral arytenoid

Correct Answer

Cricothyroid

Explanation

The cricothyroid muscle is responsible for tensing the vocal cords and increasing pitch. It is the only intrinsic laryngeal muscle supplied by the external branch of the superior laryngeal nerve.

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