Which is the main component of the phonatory system?

• A. Larynx
• B. Pharyngeal cavity
• C. Nasal cavity
• D. Lungs

Answer: (A)

Phonation comes from the vocal folds vibrating to convert airflow into sound, and this happens in the larynx. The larynx houses the true vocal cords and, with the help of intrinsic muscles, can adjust tension, length, and whether the folds come together or apart. That vibration is the primary voice source, shaping pitch and loudness.

The other structures play different roles: the pharyngeal and nasal cavities act as resonators that color and filter the sound, while the lungs provide the airstream and pressure needed to drive the vocal folds but do not produce the sound themselves. So the larynx is the main component of the phonatory system because it directly generates voiced sound through vocal-fold vibration.