Ventricle of larynx

Laryngeal ventricle
Coronal section of larynx and upper part of trachea, with Ventricle labeled at center left.
Details
Identifiers
Latin	ventriculus laryngis
TA	A06.2.09.010
FMA	64171
Anatomical terminology []

The laryngeal ventricle, (also called the ventricle of the larynx, laryngeal sinus, or Morgagni's sinus) is a fossa, situated between the vestibular and vocal folds on either side, and extending nearly their entire length. There is also a sinus of Morgagni in the pharynx.

The fossa is bounded, above, by the free crescentic edge of the vestibular ligament; below, by the straight margin of the vocal fold and laterally, by the mucous membrane covering the corresponding thyroarytenoid muscle.

The anterior part of the ventricle leads up by a narrow opening into a pouch-like diverticulum, a mucous membranous sac of variable size called the appendix of the laryngeal ventricle. The appendix (also called the laryngeal saccule, pouch or Hilton's pouch) extends vertically from the laryngeal ventricle. It runs between the vestibular fold, thyroarytenoid muscle, and thyroid cartilage, and is conical, bending slightly backward. It is covered in roughly seventy mucous glands. The muscles surrounding the appendix compress it until mucus is secreted to lubricate the vocal folds.

The entrance to the larynx, viewed from behind.

Cut through the larynx of a horse

This article incorporates text in the public domain from page 1080 of the 20th edition of Gray's Anatomy (1918)