Arytenoid muscle

From Wikipedia, the free encyclopedia
Jump to: navigation, search
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.)
Latin Musculus arytaenoideus
Gray's p.1082
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)
Anatomical terms of muscle

The arytenoid /ærɨˈtnɔɪd/ 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 opening of the glottis, especially at its back part to eliminate the posterior commissure of the vocal folds.

Additional images[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.