![]() ![]() Radiology 1988 167:319–326, with permission from the Radiological Society of North America. The communication between these nerves may. from the base of the skull to the soft palate ), the oropharynx (extending approx. Definition Pharyngeal constrictors and longitudinal muscles Attachments Arteries Nerves Function Sources + Show all Definition The pharynx is a muscular column that begins in the head posterior to the nasal cavity, travels inferiorly behind the oral cavity before finally merging with the larynx and esophagus. It is divided into the nasopharynx (extending approx. The inferior pharyngeal constrictor muscle (IPC), which consists of the thyropharyngeal (TP) and cricopharyngeal (CP) muscles, plays an important role during. Examination of the patient with dysphagia. The inferior constrictor is innervated by the pharyngeal plexus and the external and recurrent laryngeal nerves. Last updated: ApSummary The pharynx is a musculomembranous cavity that connects the oral and nasal cavities to the larynx and esophagus. There is more symmetric distention proximally than distally because the superior portion lacks the support of the thyroid cartilage. d: The patient demonstrates "blowing up a balloon." The pharynx is now expanded especially in the region of the proximal portions of the piriform sinus. It is unclear whether the uppermost portion of the cervical esophageal. In this patient the epiglottis is not clearly visualized on this view at rest. Studies suggest that the lowermost portion of the inferior pharyngeal constrictor contributes to the upper part of the UES. (a, b: Source: Netter images, with permission from Elsevier Science.) c: The pharynx has now been coated with high-density barium outlining the valleculae (v) and piriform sinuses (p). This drawing shows the contours of the valleculae and piriform sinuses and demonstrates the relationship of the valleculae to the base of the tongue and epiglottis. Note the uvula, epiglottis, piriform sinus and tongue. b: The structures in the anterior wall of the pharynx as viewed from the posterior aspect. Note also that the fibers of the cricopharyngeus or horizontal fibers of the inferior constrictor muscle merge with the fascicles of the proximal circular muscle of the esophagus. Note again that the constrictor muscles overlap, the inferior being the more external and the superior the more internal. A: The constrictor and lateral suspensory muscles of the pharynx viewed from the posterior aspect, showing: the pharyngeal raphe, and the superior, middle and inferior pharyngeal constrictor muscles, the thyropharyngeus muscle and the cricopharyngeus muscle. ![]()
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