interarytenoid fold(redirected from posterior commissure of the larynx)
mucosal fold extending across the midline between arytenoid cartilages at the base of the interarytenoid notch, forming the posteromedian portion of the laryngeal inlet.
a fold of mucosa forming the base of the rima glottidis at the bottom of the interarytenoid notch.
in·ter·ar·y·te·noid fold(in'tĕr-ar-i-tē'noyd fōld) [TA]
The soft tissue between the arytenoid cartilages.