hyopharyngeus

mid·dle con·stric·tor (mus·cle) of phar·ynx

[TA]
intermediate part of outer "circular" muscle layer of pharynx; origin, stylohyoid ligament, lesser cornu of the hyoid bone (chondropharyngeal part [TA]) and greater cornu of the hyoid bone (ceratopharyngeal part [TA]); insertion, pharyngeal raphe in the posterior wall of the pharynx; action, narrows pharynx in the act of swallowing; nerve supply, pharyngeal plexus.

hyopharyngeus

(hī″ō-făr-ĭn′jē-ŭs) [″ + pharynx, throat]
The middle pharyngeal constrictor.