Cricothyroid Muscle
Cricothyroid muscle is the only tensor muscle of the larynx aiding with phonation.
origin :
Anterior and lateral cricoid cartilage .
Insertion :
Inferior cornu and lamina of the thyroid cartilage .
Nerve :
External branch of Superior laryngeal nerve (branch of the vagus nerve) .
Actions :
tension and elongation of the vocal folds .
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