- Lateral cricoarytenoid muscle
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Lateral cricoarytenoid 
Muscles of larynx. Side view. Right lamina of thyroid cartilage removed. Latin musculus cricoarytenoideus lateralis Gray's subject #236 1082 Origin lateral part of the arch of the cricoid Insertion muscular process of the arytenoid cartilage Artery Nerve recurrent laryngeal branch of the vagus Actions adduct and medially rotate the cartilage, pulling the vocal ligaments towards the midline and backwards and so closing off the rima glottidis Antagonist Posterior cricoarytenoid muscle The lateral cricoarytenoid (also anterior cricoarytenoid) muscles extend from the lateral cricoid cartilage to the ipsilateral arytenoid cartilage. By rotating the arytenoid cartilages medially, these muscles adduct the vocal cords and thereby close the rima glottidis, protecting the airway. (Their action is antagonistic to that of the posterior cricoarytenoid muscles.) The lateral cricoarytenoid muscles receive innervation from the recurrent laryngeal branch of the vagus nerve (CN X).
Additional images
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Muscles of the larynx, seen from above.
See also
External links
- LUC lcri
- Atlas of anatomy at UMich rsa4p3
- Lateral+cricoarytenoid+muscle at eMedicine Dictionary
- lesson11 at The Anatomy Lesson by Wesley Norman (Georgetown University) (larynxlatcricoary)
List of muscles of head and neck: the neck (TA A04.2, GA 4.387) Cervical Suboccipital Suprahyoid CN V3 (medial): mylohyoid · anterior belly of digastric
CN VII (lateral): stylohyoid · posterior belly of digastric
C1 (deep): geniohyoidInfrahyoid/strap Fasciae Pharynx pharyngeal constrictor (superior, middle, inferior) · longitudinal (stylopharyngeus, salpingopharyngeus)Larynx cricothyroid · cricoarytenoid (posterior, lateral) · arytenoid (oblique arytenoid/aryepiglottic, transverse arytenoid) · thyroarytenoid (vocal, thyroepiglottic)Categories:- Muscle stubs
- Muscles of the head and neck
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