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Rima glottidis

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Rima glottidis

Rima glottidis
Muscles of the larynx, seen from above
The entrance to the larynx.
Latin Rima glottidis
Gray's subject #235 1080

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 and arytenoid muscles.

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 (CNX). 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

  • 32:st-1300
  • eMedicine Dictionary
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