Arytenoid muscle

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Arytenoid muscle
Musculusarytenoideus.png
Muscles of larynx. Posterior view.
Oblique arytenoid: The "X" in the center.
Transverse arytenoid: Bands underneath the "X".
Aryepiglotticus: Wraps around back.
Gray953.png
Sagittal section of the larynx and upper part of the trachea. (Arytenoideus visible at center right.)
Details
OriginArytenoid cartilage on one side
InsertionArytenoid cartilage on opposite side
Arterysuperior laryngeal artery
Nerverecurrent laryngeal branch of the vagus
Actionsapproximate the arytenoid cartilages (close rima glottis)
Identifiers
LatinMusculus arytaenoideus
TAA06.2.08.012
FMA46582
Anatomical terms of muscle

The arytenoid /ærɪˈtnɔɪd/ 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[edit]

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

Additional images[edit]

References[edit]