It plays a key role in adjusting human voice pitch by changing the tension of the vocal cords.

This tension is controlled mostly by the endolaryngeal vocalis and the extralaryngeal cricothyroid muscles which change vocal fold tension by narrowing the cricothyroid space created by rotation and gliding movements in horizontal and vertical direction allowed for by the cricothyroid articulation.

It has a tight capsule and ligaments with either a concavity or a small groin directed from posterior superior to anterior inferior.

In contrary to type A it lacks a definite "facet" and the two cartilaginous parts of the articulation are joined only by soft connective tissue.

Type C concerns all others and has a flat surface with or without a tiny protuberance.