The superior pharyngeal constrictor muscle is a muscle in the pharynx. It is the highest located muscle of the three pharyngeal constrictors. The muscle is a quadrilateral muscle, thinner and paler than the inferior pharyngeal constrictor muscle and middle pharyngeal constrictor muscle.Occipital bone seen from outsideInner surface of the Mandible seen from the side. The insertion of the mylopharyngeal part of the superior pharyngeal constrictor muscle is marked as 'sup const'.The internal carotid and vertebral arteries. Right side.Muscles of the palate seen from behind.Dissection of the pharyngeal constrictorsDeep dissection of the floor of mouth. Anterior view.Deep dissection of larynx, pharynx and tongue seen from behind The superior pharyngeal constrictor muscle is a muscle in the pharynx. It is the highest located muscle of the three pharyngeal constrictors. The muscle is a quadrilateral muscle, thinner and paler than the inferior pharyngeal constrictor muscle and middle pharyngeal constrictor muscle.