The oblique arytenoid is bilaterally paired intrinsic muscle of the larynx. It is superficial to the transverse arytenoid; the oblique and transverse arytenoids are often considered two parts of a single muscle - the interarytenoid muscle (which is then said to have an oblique part and a transverse part).[1]
Oblique arytenoid
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.)
Each oblique arytenoid muscle attaches to both arytenoid cartilages; the two oblique arytenoids thus cross each other.[1]
Some muscle fibres of the oblique arytenoid muscle proceed to extend laterally around the apex of arythenoid cartilage into the aryepiglottic fold, thus forming the aryepiglottic muscle.[1]
Each oblique arytenoid muscle attaches to the posterior aspect of the muscular process of arytenoid cartilage of one side, and to the apex of the arytenoid cartilage of the opposite side; the two oblique arytenoid muscles thus cross each other obliquely.[1]
Together with the aryepiglottic muscles, the two oblique arytenoid muscles function as a sphincter of the laryngeal inlet by adducting aryepiglottic folds, and approximating the arytenoid cartilages and the tubercle of epiglottis.[1]
The muscles act during swallowing or coughing.[citation needed]
Referencesedit
^ abcdefgStandring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 727. ISBN978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
External linksedit
lesson11 at The Anatomy Lesson by Wesley Norman (Georgetown University) (larynxmuscles)
oblique, arytenoid, oblique, arytenoid, bilaterally, paired, intrinsic, muscle, larynx, superficial, transverse, arytenoid, oblique, transverse, arytenoids, often, considered, parts, single, muscle, interarytenoid, muscle, which, then, said, have, oblique, par. The oblique arytenoid is bilaterally paired intrinsic muscle of the larynx It is superficial to the transverse arytenoid the oblique and transverse arytenoids are often considered two parts of a single muscle the interarytenoid muscle which is then said to have an oblique part and a transverse part 1 Oblique arytenoidMuscles 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 DetailsOriginPosterior surface of muscular process of arytenoid cartilageInsertionPosterior surface of apex of adjacent arytenoid cartilage extends into aryepiglottic foldNerverecurrent laryngeal branch of vagus nerve X ActionsSphincter of the laryngeal inletIdentifiersLatinmusculus arytenoideus obliquusTA98A06 2 08 010TA22203FMA46583Anatomical terms of muscle edit on Wikidata Each oblique arytenoid muscle attaches to both arytenoid cartilages the two oblique arytenoids thus cross each other 1 Some muscle fibres of the oblique arytenoid muscle proceed to extend laterally around the apex of arythenoid cartilage into the aryepiglottic fold thus forming the aryepiglottic muscle 1 Contents 1 Anatomy 1 1 Attachments 1 2 Vasculature 1 3 Innervation 2 Function 3 References 4 External linksAnatomy editAttachments edit Each oblique arytenoid muscle attaches to the posterior aspect of the muscular process of arytenoid cartilage of one side and to the apex of the arytenoid cartilage of the opposite side the two oblique arytenoid muscles thus cross each other obliquely 1 Vasculature edit Arterial supply is provided by laryngeal branches of superior thyroid arteries and inferior thyroid arteries 1 Innervation edit The muscle receives motor innervation from the recurrent laryngeal nerve a branch of the vagus nerve CN X 1 as is the case with all intrinsic muscles of the larynx except the cricothyroid muscle citation needed Function editTogether with the aryepiglottic muscles the two oblique arytenoid muscles function as a sphincter of the laryngeal inlet by adducting aryepiglottic folds and approximating the arytenoid cartilages and the tubercle of epiglottis 1 The muscles act during swallowing or coughing citation needed References edit a b c d e f g Standring Susan 2020 Gray s Anatomy The Anatomical Basis of Clinical Practice 42th ed New York p 727 ISBN 978 0 7020 7707 4 OCLC 1201341621 a href Template Cite book html title Template Cite book cite book a CS1 maint location missing publisher link External links editlesson11 at The Anatomy Lesson by Wesley Norman Georgetown University larynxmuscles Portal nbsp Anatomy nbsp This muscle article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Oblique arytenoid amp oldid 1166517390, wikipedia, wiki, book, books, library,