![]() ![]() The recurrent and inferior laryngeal nerve pass deep to the lower border of the inferior constrictor. Its primary action is constriction of the pharynx (in coordination with the middle pharyngeal constrictor and the inferior pharyngeal constrictor muscles) to. The Killian dehiscence is a triangular area of weakness formed by the oblique fibers of the inferior pharyngeal constrictor (thyropharyngeus), which attach anteriorly to the oblique lamina at the sides of the thyroid cartilage and posteriorly to the median raphe, and the. The muscle's fibers diverge from their origin: the more inferior fibres descend deep to the inferior pharyngeal constrictor muscle the middle portion of fibres pass transversely the more superior fibers ascend and overlap the superior pharyngeal constrictor muscle. It is located in the posterior wall of the laryngopharynx, slightly above the origin of the esophagus 1. origin: it arises in the interval between the cricothyroid in front, and the articular facet for the inferior cornu of the thyroid cartilage behind.Ä«etween the thyropharyngeus and cricopharyngeus is a weak area called Killian's dehiscence which a pouch of mucosa can protrude to form a pharyngeal diverticulum. The middle pharyngeal constrictor is a sheet-like, fan-shaped muscle. origin: 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. Inferior fibers are horizontal and continuous with the circular fibers of the esophagus the rest ascend, increasing in obliquity, and overlap with the middle constrictor. Superior Pharyngeal Constrictor - Origin. Inferior Pharyngeal Constrictor 4) Salpingopharyngeus 5) Stylopharyngeus. These muscles make up the inner layer of musculature - they act to elevate (shorten and widen) the pharynx and larynx during swallowing and speaking. Motor: cricothyroid, inferior pharyngeal constrictor, secretomotor to mucous glands of larynx above vocal folds Sensory : mucous lining of larynx above vocal folds Notes : external br. It passes from the thyroid and cricoid, and the fibres spread backwards into the fibrous pharyngeal raphe. Study with Quizlet and memorize flashcards containing terms like Pharyngeal Muscles (6), Constrictor muscles (3), Pharyngeal aponeurosis and more. superior pharyngeal constrictor muscle middle pharyngeal constrictor muscle inferior pharyngeal constrictor muscle Inner/longitudinal muscles. The Inferior pharyngeal constrictor, the most inferior of the three constrictors, that facilitate passage of the food bolus down the pharynx.
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