![]() Severe spasm can cause pain during swallowing( Odynophagia). ANATOMY 2 Flashcards Quizlet middle pharyngeal constrictor - Wiktionary inferior pharyngeal constrictor muscle. Motor incoordination of the cricopharyngeus can cause difficulty swallowing. Contents 1 Origin and insertion 2 Action 3. Uncoordinated contraction, and/or spasm and/or impaired relaxation of this muscle are currently considered the main factors in development of a Zenker's diverticulum. 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.Īs soon as the bolus of food is received in the pharynx, the elevator muscles relax, the pharynx descends, and the constrictores contract upon the bolus, and convey it downward into the esophagus. and thus propel the bolus of food inferiorly into. The circular muscles contract sequentially from superior to inferior to constrict the pharyngeal lumen. ![]() They are arranged like stacked glasses, which form an incomplete muscular circle around the pharynx. 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.įrom 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. There are three circular pharyngeal constrictor muscles superior, middle, and inferior.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.It is reported that the palatopharyngeus has muscle bundles in various directions and with attachment sites, and each muscle bundle has a specific function. The components arising from the cricoid and thyroid cartilages are also known as cricopharyngeus and thyropharyngeus respectively. Purpose The palatopharyngeus is one of the longitudinal pharyngeal muscles which contributes to swallowing. Tensor veli palatini muscle (Musculus tensor veli palatini) Tensor veli palatini is a slender, triangular muscle situated in the pterygoid fossa of skull.It belongs in the group of the soft palate and pharyngeal muscles, along with the levator veli palatini, palatoglossus, palatopharyngeus, musculus uvulae, salpingopharyngeus, stylopharyngeus and superior pharyngeal constrictor, middle.
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