False vocal cords
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At the time the article was created Tom Nicholls had no recorded disclosures.View Tom Nicholls's current disclosures
At the time the article was last revised Craig Hacking had the following disclosures:
- Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.View Craig Hacking's current disclosures
The false vocal cords (vestibular folds, ventricular folds, ventricular bands) are paired shelf-like structures located within the supraglottic larynx that divide the laryngeal vestibule above from the laryngeal ventricle below. They function to protect the airway and play very little if any part in phonation.
The quadrangular membrane is a paired membrane that extends from the anterolateral surface of the arytenoid cartilage to the lateral edge of the epiglottis on either side 1,4. It has a superior and inferior free edge. The superior free edge with the overlying mucosa forms the aryepigottic fold, while the thickened inferior free edge forms the vestibular ligament 4. The vestibular ligament with the overlying mucosa forms the false vocal cord.
On direct laryngoscopy, the false vocal cords are pink prominences visualized supero-lateral to the true vocal cords 1. The luminal space directly between the vestibular folds is termed the rima vestibuli 2.
superior: laryngeal vestibule
medial: rima vestibuli
inferior: laryngeal ventricle