Origin
Cricoid cartilage.
Insertion
Arytenoid cartilage.
Blood supply
Superior and inferior laryngeal arteries.
Nerve supply
Vagus nerve.
Action
It closes the vocal cord and protects the airway.
Disease/Injury
During total or partial thyroid removal surgery, injury to laryngeal nerve affects the function of lateral cricoarytenoid muscle. This causes the voice to become poor or weak for several weeks before it regains normalcy.
Muscle exercise
NA
Interesting facts
NA
