Arytenoid muscle

Arytenoid muscle
Muscles of larynx. Posterior view. Oblique arytenoid: The "X" in the center. Transverse arytenoid: Bands underneath the "X". Aryepiglotticus: Wraps around back.
Sagittal section of the larynx and upper part of the trachea. (Arytenoideus visible at center right.)
Details
Origin	Arytenoid cartilage on one side
Insertion	Arytenoid cartilage on opposite side
Artery	superior laryngeal artery
Nerve	recurrent laryngeal branch of the vagus
Actions	approximate the arytenoid cartilages (close rima glottis)
Identifiers
Latin	Musculus arytaenoideus
TA	A06.2.08.012
FMA	46582
*Anatomical terms of muscle* [edit on Wikidata]

The arytenoid /ærᵻˈtiːnɔɪd/ is a single muscle, filling up the posterior concave surfaces of the arytenoid cartilages.

It arises from the posterior surface and lateral border of one arytenoid cartilage, and is inserted into the corresponding parts of the opposite cartilage.

It consists of oblique and transverse parts.

Action

The Arytœnoideus approximates the arytenoid cartilages, and thus closes the opening of the glottis, especially at its back part to eliminate the posterior commissure of the vocal folds.

Additional images

The cartilages of the larynx. Posterior view.
Muscles of larynx. Side view. Right lamina of thyroid cartilage removed.
Aryepiglotic muscle
Muscles of the larynx, seen from above.
Dissection of the muscles of the palate from behind.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

Muscles of the neck

Cervical	Platysma Sternocleidomastoid Longus capitis Longus colli Scalene anterior middle posterior Rectus capitis anterior muscle Rectus capitis lateralis muscle

Suboccipital	Rectus capitis posterior major minor Obliquus capitis inferior superior

Suprahyoid	Mylohyoid Stylohyoid Digastric Geniohyoid

Infrahyoid	Thyrohyoid Sternohyoid Sternothyroid Omohyoid

Pharynx	Pharyngeal constrictor superior middle inferior Stylopharyngeus Salpingopharyngeus

Larynx	Cricothyroid Cricoarytenoid posterior lateral Arytenoid oblique arytenoid aryepiglottic transverse arytenoid Thyroarytenoid vocal thyroepiglottic

Trachea	Trachealis

Fasciae	Deep cervical fascia Pretracheal fascia Prevertebral fascia Investing layer Carotid sheath Alar fascia Palatine aponeurosis Buccopharyngeal fascia Pharyngobasilar fascia Pharyngeal raphe

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