Final answer:
Increasing the tension on the arytenoid cartilage alters the pitch of the sound produced by the voice box. This results in a higher pitch sound.
Step-by-step explanation:
By increasing the tension on the arytenoid cartilage, you can alter the pitch of the sound produced by the voice box. When the muscles attached to the arytenoid cartilage contract, it moves the vocal cords closer together, increasing tension.
This results in a higher pitch sound.
Conversely, when the muscles relax, the vocal cords move further apart, reducing tension and producing a lower pitch sound.