Rima glottidis

Rima glottidis
Muscles of the larynx, seen from above
The entrance to the larynx.
Details
Identifiers
Latin	Rima glottidis
TA	A06.2.09.014
FMA	55472
*Anatomical terminology* [edit on Wikidata]

The rima glottidis is the opening between the true vocal cords and the arytenoid cartilages.

It is normally subdivided into two parts: that between the arytenoid cartilages is called the intercartilaginous part (or the intercartilaginous glottis, respiratory glottis, or interarytenoid space), and that between the vocal folds the intermembranous part or glottis vocalis.

It is closed by the lateral cricoarytenoid muscles and the arytenoid muscle.

It is opened by the posterior cricoarytenoid muscles.

All of these muscles receive their innervation from the recurrent laryngeal nerve which is a branch of the vagus nerve (CN X). This nerve can be vulnerable in thyroid surgery, if damaged control to the rima glottidis may be affected resulting in a hoarse voice, aphonia or difficulty breathing.

External links

Anatomy photo:32:st-1300 at the SUNY Downstate Medical Center

Anatomy of the larynx

Cartilage	major/unpaired: Epiglottis Vallecula Thyroid Adam's apple Cricoid minor/paired: Arytenoid Vocal process Muscular process Corniculate Cuneiform

Ligaments/folds	extrinsic ligaments: Hyoepiglottic ligament Thyrohyoid membrane Lateral ligament Median ligament Thyroepiglottic ligament Cricotracheal ligament intrinsic ligaments, upper: Quadrangular membrane Aryepiglottic Vestibular ligament/Vestibular fold intrinsic ligaments, lower: Cricothyroid ligament Median Lateral/Conus elasticus Vocal ligament/Vocal folds

Laryngeal cavity	Laryngeal inlet Vestibule Rima vestibuli Ventricle Rima glottidis/Glottis Infraglottic cavity

Other	Muscles of larynx Cricothyroid articulation Cricoarytenoid articulation

This article is issued from Wikipedia - version of the 9/15/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.