Middle Pharyngeal Constrictor Muscle (Head And Neck, Sagittal Section)

Description

Running as a fan-shaped sheet along the lateral wall of the pharynx, the middle pharyngeal constrictor arises from the greater and lesser horns of the hyoid bone and the stylohyoid ligament, then courses posteriorly to the median pharyngeal raphe. A midsagittal section of the male head and neck typically places this muscle just posterior to the oral cavity and tongue base, inferior to the soft palate, and superior to the thyropharyngeus portion of the inferior constrictor, with the epiglottis and laryngeal inlet lying anteroinferior to its posterior margin. Bony landmarks such as the mandible, hard palate, and upper cervical vertebrae frame the muscular pharyngeal wall. Clear relationships matter here. During the pharyngeal phase of swallowing, the middle constrictor contributes to sequential bolus propulsion by narrowing the pharyngeal lumen from superior to inferior, and its position relative to the hyoid helps explain why hyolaryngeal elevation and pharyngeal constriction are tightly coupled actions rather than independent events. This view is also clinically relevant when teaching dysphagia after vagus nerve (CN X) or pharyngeal plexus dysfunction, where weak constriction can leave residue in the valleculae and piriform recesses and increase aspiration risk. It also orients the reader to surgical corridors in the lateral pharynx, where pharyngeal wall anatomy must be respected to avoid postoperative swallowing deficits. Use this illustration in gross anatomy and speech-language pathology coursework to anchor the constrictor muscle sequence, and in ENT or head and neck surgery teaching files when correlating pharyngeal mechanics with endoscopic swallowing studies and lateral videofluoroscopy. It also fits well in textbooks and patient-facing dysphagia materials that need a clean sagittal explanation of pharyngeal constriction and the hyoid’s anatomic context. Anatomical accuracy verified by SciePro's Medical Advisory Board.