"anteriorly: post-cricoid mucosa, posterior cricoarytenoid muscle"
"The upper part of laryngopharynx wraps around the larynx, producing these two recesses 4"
"Zenker diverticulum / pharyngeal pouch"
Expected headings
"Subsites"
"posteriorly: mucosal wall, middle and inferior constrictor muscles"
"superiorly: hyoid bone, glossoepiglottic and pharyngoepiglottic folds"