Origin
Cricoid cartilage.
Insertion
Thyroid cartilage.
Blood supply
Superior and inferior laryngeal arteries.
Nerve supply
External laryngeal nerve.
Action
It helps to produce voice from the larynx.
Disease/Injury
Vocal cord paralysis – the superior laryngeal nerve gets damaged due to which the cricothyroid muscle do not work properly when the person sings in high note. Sometimes the person is able to speak normally, but is not able to sing.
Muscle exercise
To exercise your vocal muscles, you need to recite ‘me, may, my, mo, mu’ repeatedly with a change in alphabets.
Interesting facts
The sound of any person’s voice depends upon how the cricothyroid muscle creates tension in the vocal folds.
