Cricoarytenoid posterior muscles :-
Muscle details :-
small, paired muscles that extend from the posterior cricoid cartilage to the arytenoid cartilages in the larynx.
posterior part of the cricoid .
muscular process of the arytenoid cartilage .
Nerve supply :-
recurrent laryngeal branch of the vagus .
abducts and laterally rotates the cartilage, pulling the vocal ligaments away from the midline and forward and so opening the rima glottidis .