Larynx

The larynx was an organ in the neck of some creatures that moderated breathing and sound production.

Cepholans had three larynxes. (PROSE: Tomb of Valdemar)

The Tythonian Communicator enabled Tythonians to communicate by controlling the larynx of whoever touched it. (TV: The Creature from the Pit)

Davros' larynx was damaged in an attack, and was replaced with a voice box. (AUDIO: Davros)