![]() The inferior fibers are horizontal and continuous with the circular fibers of the esophagus the rest ascend, increasing in obliquity, and overlap the Constrictor medius. The inferior pharyngeal constrictor muscle (IPC), which consists of the thyropharyngeal (TP) and cricopharyngeal (CP) muscles, plays an important role during. From these origins the fibers spread backward and medialward to be inserted with the muscle of the opposite side into the fibrous raphé in the posterior median line of the pharynx. The meaning of INFERIOR CONSTRICTOR is a muscle of the pharynx that is the thickest of its three constrictors, arises from the surface and side of the. Pharyngeal weakness is seen across many common conditions: Parkinson’s disease 2, brainstem stroke 3, anterior cervical spine surgery 4, head and neck cancer 5, myotonic muscular dystrophy 6 and Zenker’s diverticulum 7. Late radiation-induced dysphagia depends significantly on the dose to the lower pharyngeal constrictor. Poor pharyngeal constriction is one of the most common swallowing deficits reported in swallowing clinics 1. Their different attachment points and sequential, involuntary contraction allow the pharyngeal lumen to be closed in a cranial to a caudal direction for peristalsis during swallowing, while alternately remaining. <55 Gy) on late dysphagia and QoL was analyzed using the ttest. The three pharyngeal constrictor muscles are delineated by their position relative to one another (superior, middle, and inferior). Influence of dose to the constrictors (55 Gy vs. The communication between these nerves may. On the thyroid cartilage it arises from the oblique line on the side of the lamina, from the surface behind this nearly as far as the posterior border and from the inferior cornu. The pharyngeal constrictors (superior, middle, and inferior) were each contoured as an organ at risk. The inferior constrictor is innervated by the pharyngeal plexus and the external and recurrent laryngeal nerves. Electromyographically, only the cricopharyngeus and inferior pharyngeal constrictor fired continuously at rest and ceased to fire during swallowing. ![]() From the cricoid cartilage it arises in the interval between the Cricothyreoideus in front, and the articular facet for the inferior cornu of the thyroid cartilage behind. The Inferior constrictor (Constrictor pharyngis inferior) the thickest of the three constrictors, arises from the sides of the cricoid and thyroid cartilage. Nerve: External laryngeal branch of thevagus ![]()
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