| Arytenoid muscle | |
|---|---|
 Muscles oflarynx. Posterior view. Oblique arytenoid: The "X" in the center. Transverse arytenoid: Bands underneath the "X". Aryepiglotticus: Wraps around back. | |
 | |
| Details | |
| Origin | Arytenoid cartilage on one side |
| Insertion | Arytenoid cartilage on opposite side |
| Artery | Superior laryngeal artery |
| Nerve | Recurrent laryngeal branch of thevagus |
| Actions | Approximate the arytenoid cartilages (closerima glottis) |
| Identifiers | |
| Latin | musculus arytaenoideus |
| Anatomical terms of muscle | |
Thearytenoid muscle/ærɪˈtiːnɔɪd/ orinterarytenoid muscle is a composite intrinsic muscle of the larynx, consisting of atransverse part and anoblique part - the two parts may be considered as separate muscles: an unpairedtransverse arytenoid muscle, and a bilaterally pairedoblique arytenoid muscle.[1]
The two constituent parts differ in their attachments, structure and actions. Both receive motor innervation from therecurrent laryngeal nerve(s) (each nerve being a branch of onevagus nerve (CN X)).[1]
Function of the arytenoid muscle is a good method to determine function of therecurrent laryngeal nerve.[2] Continuouselectromyography of the arytenoid muscle can provide confidence tosurgeons that the recurrent laryngeal nerve is not damaged duringneck surgeries, such asthyroidectomy.[2]
The arytenoid muscle is found in many animals, includingdogs.[3]
This article incorporates text in thepublic domain from the 20th edition ofGray's Anatomy(1918){{cite book}}: CS1 maint: location missing publisher (link)