A vertical recess extending upwards from the anterior end of the laryngeal ventricle between the vestibular fold and the thyroid cartilage secretes mucus to lubricate the vocal folds. This structure is the:

• A Piriform recess
• B Saccule of the larynx ✓
• C Reinke space
• D Interarytenoid notch

Explanation

The saccule is the blind upward mucosal diverticulum of the ventricle, containing numerous mucous glands whose secretion lubricates the vocal folds; it is sometimes called the oil can of the larynx. The piriform recess is a food channel in the laryngopharynx lateral to the quadrangular membrane, Reinke space is the subepithelial layer of the vocal fold involved in oedema, and the interarytenoid notch is merely a posterior mucosal landmark.

Reference: Gray's Anatomy, 42nd ed.

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Written and medically reviewed by the StethoPrep medical team.