Arytenoid muscle
The arytenoid muscle or interarytenoid muscle is a composite intrinsic muscle of the larynx, consisting of a transverse part and an oblique part - the two parts may be considered as separate muscles: an unpaired transverse arytenoid muscle, and a bilaterally paired oblique arytenoid muscle.
The two constituent parts differ in their attachments, structure and actions. Both receive motor innervation from the recurrent [laryngeal nerve|recurrent laryngeal nerve(s)].