The lateral cricoarytenoid is an intrinsic muscle of the larynx. It narrows the space between the vocal folds, which ats to modulate the tone and volume of speech.
- Attachments: Originates from the arch of the cricoid cartilage and attaches to the muscular process of the arytenoid cartilage.
- Actions: Adduction of the vocal folds.
- Innervation: Inferior laryngeal nerve (branch of recurrent laryngeal).
- Blood Supply: Laryngeal banches of the superior and inferior thyroid arteries.