Lateral cricoarytenoid muscle
| Lateral cricoarytenoid | ||
|---|---|---|
Antagonist Posterior cricoarytenoid muscle | | |
| Identifiers | ||
| Latin | musculus cricoarytaenoideus lateralis | |
| TA98 | A06.2.08.006 | |
| TA2 | 2198 | |
| FMA | 46579 | |
| Anatomical terms of muscle] | ||
The lateral cricoarytenoid (also anterior cricoarytenoid) is an intrinsic muscle of the
Anatomy
The muscle is directed obliquely superoposteriorly from its anterior attachment to its posterior attachment.[1]
Attachments
The muscle's anterior attachment is onto the superior border of the arch of the cricoid cartilage.[1]
Its posterior attachment is onto the anterior aspect of the muscular process of the ipsilateral arytenoid cartilage.[2]
Innervation
The muscle receives motor innervation from (branches of the anterior terminal division of) the recurrent laryngeal nerve[3] (which is in turn a branch of a vagus nerve (CN X)).
Actions/movements
The muscle rotates the arytenoid cartilage medially (it thus acts as antagonist to the posterior cricoarytenoid muscle which rotates the cartilage laterally).[1]
Function
The muscle closes the
It also shortens and slackens the vocal cords.[1]
Additional images
-
Muscles of the larynx, seen from above.
See also
References
- ^ OCLC 1201341621.)
{{cite book}}: CS1 maint: location missing publisher (link - OCLC 1201341621.)
{{cite book}}: CS1 maint: location missing publisher (link - OCLC 1201341621.)
{{cite book}}: CS1 maint: location missing publisher (link
External links
- Atlas image: rsa4p3 at the University of Michigan Health System
- lesson11 at The Anatomy Lesson by Wesley Norman (Georgetown University) (larynxlatcricoary)
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