Origin
It arises from the arytenoid cartilage.
Insertion
It inserts into the opposite arytenoid cartilage.
Blood supply
Superior and inferior laryngeal arteries.
Nerve supply
Vagus nerve.
Action
It helps to pull the arytenoid cartilages towards each other to narrow and close the glottis (larynx) every time when we swallow, cough, and hold our breath.
Disease/Injury
NA
Muscle exercise
NA
Interesting facts
NA
