La Rioja PAU Choir II Practice Questions - La Rioja PAU Choir And Vocal Technique II Coro Y Técnica Vocal II (2o Bachillerato UR 2026) Exam

Which single intrinsic laryngeal muscle acts as the sole abductor of the vocal folds to open the glottis for breathing?

Lateral cricoarytenoid (LCA) Posterior cricoarytenoid (PCA) Cricothyroid (CT) Thyroarytenoid (TA)

Correct Answer:

Posterior cricoarytenoid (PCA)

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