Origin
Cricoid cartilage.
Insertion
Arytenoid cartilage.
Blood supply
Superior and inferior laryngeal arteries.
Nerve supply
Recurrent laryngeal nerve.
Action
It helps to open the vocal cords.
Disease/Injury
An increase in age can shrink the size of this muscle; however, voice building exercise can help regain it.
Muscle Exercise
Reading loudly helps to strengthen this muscle.
Interesting facts
NA
