The muscles of the pharynx are supplied by the pharyngeal plexus, a network of nerves from pharyngeal branches of the vagus and glossopharyngeal nerves. Most lymph drains back to the retropharyngeal nodes. Veins of the same name drain either into the pterygoid venous plexus or directly into the internal jugular vein. inferior laryngeal artery (from the inferior thyroid artery, off the thyrocervical trunk).superior laryngeal artery (from the superior thyroid artery).artery of the pterygoid canal (from the maxillary artery).greater palatine artery (from the maxillary artery).The prevalence proportion of G2 xerostomia at 2 years was 17 versus 6 (contralateral parotid gland Dmean 25.8 Gy vs less). tonsillar artery (from the facial artery) The optic nerve, pharyngeal constrictor muscle (PCM), and thyroid showed tendencies between DVH parameters and toxicity incidence.ascending palatine artery (from the facial artery).ascending pharyngeal artery (from the external carotid artery (ECA)).Numerous branches anastomose in the pharynx, providing it with a rich arterial supply: The internal longitudinal layer is composed of the three paired muscles: The external circular layer is composed of the three constrictor muscles: The superior constrictor muscle is located anterior to the prevertebral muscles and posterior to the. The superior pharyngeal constrictor has a rather complex morphology, consisting of four parts. 16 The transverse PP is a unique muscle interspaced between fibers of the longitudinal PP and the SC where the paired muscle fascicles insert in the midline of the posterior nasopharyngeal wall. There are two groups of pharyngeal muscles, the external circular layer and the internal longitudinal layer. Superior pharyngeal constrictor Origin and insertion. The current description contrasts to Finkelstein who attributed Passavants ridge to the superior pharyngeal constrictor muscle. communicates with the larynx anteriorly. laryngopharynx (or hypopharynx): inferior to the superior border of the epiglottis and the pharyngoepiglottic folds, superior to the cricoid cartilage.communicates with the oral cavity anteriorly Erasmus University Medical Center 2007 (Netherlands) (2000-2005) PMID 17714815 - 'Dysphagia disorders in patients with cancer of the oropharynx are significantly affected by the radiation therapy dose to the superior and middle constrictor muscle: a dose-effect relationship.' (Levendag PC, Radiother Oncol.oropharynx: posterior to the base of tongue, inferior to the soft palate, bounded laterally by the palatoglossal and palatopharyngeal arches, and superior to the superior tip of the epiglottis.communicates with the nasal cavity anteriorly There are six pharyngeal muscles, which work together to push food into the esophagus: Superior pharyngeal constrictor muscle Middle pharyngeal constrictor.nasopharynx: posterior to the nasal choanae, extending from the vault of the pharynx superiorly to the soft palate inferiorly.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |