Anatomy and physiology study guide

Parts of the LARYNGEAL CAVITY

The boundaries formed by the vestibular and vocal folds  divide the cavity of the larynx into three parts. These are illustrated schematically in the Figure below:
 
1. The VESTIBULE, which is the area above the vestibular folds.
 
2. The VENTRICLE, which is a pocket-like recess between the vestibular and vocal folds on both sides.
3. The INFRAGLOTTIC CAVITY, which is the area below the vocal folds.
 
Figure : Schematic diagram (coronal section) illustrating the 3 parts of the laryngeal cavity. Modified slightly from Basmajian, Grants Method of Anatomy
 There are two other terms you must know:
 
1. The GLOTTIS is the aperture formed by the vocal folds (analogous to the iris of the eye).
2. The RIMA GLOTTIDIS is the opening between the vocal folds (analogous to the pupil of the eye). Realize that the size of the rime glottidis is a major factor in determining how much air can enter the trachea and lungs.
 

Posted by lazina at 1:30 PM

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