Thyroarytenoid muscle
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| Thyroarytenoid muscle | ||
|---|---|---|
| Muscles of the larynx, seen from above. | ||
| Gray's | subject #236 | |
| Origin: | Inner Surface of the Thyroid Cartilage (anterior aspect) | |
| Insertion: | Anterior Surface of Arytenoid Cartilage | |
| Blood: | ||
| Nerve: | recurrent laryngeal branch of the vagus | |
| Action: | helps to adduct the vocal folds during speech | |
The Thyreoarytænoideus (Thyroarytenoid) is a broad, thin, muscle which lies parallel with and lateral to the vocal fold, and supports the wall of the ventricle and its appendix.
It arises in front from the lower half of the angle of the thyroid cartilage, and from the middle cricothyroid ligament.
Its fibers pass backward and lateralward, to be inserted into the base and anterior surface of the arytenoid cartilage.
The lower and deeper fibers of the muscle can be differentiated as a triangular band which is inserted into the vocal process of the arytenoid cartilage, and into the adjacent portion of its anterior surface; it is termed the Vocalis, and lies parallel with the vocal ligament, to which it is adherent.
[edit] Additional images
Coronal section of larynx and upper part of trachea. |
Muscles of larynx. Side view. Right lamina of thyroid cartilage removed. |
[edit] External links
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
