How to move the arytenoid cartilage

The arytenoid cartilage opens and closes the vocal cord and the shape resembles a triangular pyramid.
I constructed a clay model of the arytenoid cartilage, which is larger than the real scale size, for observation and educational purposes.
The following picture is the right side of the arytenoid cartilage.
A:Corniculate cartilage B: Vocal process C: Coronoid process D:Apex of arytenoid cartilage E: Anterolateral aspect F:Back side G:Articular surface H: Hillock I: Medial surface

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The arytenoid cartilage is located on the dorsal side of the larynx above the cricoid lamina. The arytenoid cartilage articulates with the cricoid cartilage, and slides on the articular surface of the cricoid cartilage with the axis’ rotation.
This movement is required to possess the following qualities, speed of movement and delicate movements.
When the arytenoid cartilage is adducted, the vocal cords close. When the arytenoid cartilage is abducted, the vocal cords open.
If the arytenoid cartilage cannot move quickly or delicately, the voice will fail to produce detailed sounds and/or have the ability to sing freely.
The roll of the arytenoid cartilage is very important to vocalization.

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