The most medial and vertical of the three styloid muscles is the stylopharyngeus. It is flattened inferiorly and cylindrical superiorly.īefore spreading out beneath the mucosal membrane, it travels inferior-ward down the pharynx’s side between the middle and superior pharyngeal constrictors, which are both located superficially to the stylopharyngeus. Resistance is used depending on the condition of the patients.Ī long, lean, and tapered pharyngeal muscle is the stylopharyngeus.dilates the pharynx to permit the passage of a large food bolus, thereby facilitating swallowingrearm.The middle cervical lymph nodes that drain into the supraclavicular lymph nodes moderate the lymphatic outflow of the stylopharyngeus muscle area. Pharyngeal branch of ascending pharyngeal artery.elevate the larynx, elevate the pharynx, swallowing.The glossopharyngeal nerve runs on the lateral side of this muscle and crosses over it to reach the tongue. Some of its fibers are lost in the constrictor muscles while others, joining the palatopharyngeus muscle, are inserted into the posterior border of the thyroid cartilage. It arises from the medial side of the base of the temporal styloid process, passes downward along the side of the pharynx between the superior pharyngeal constrictor and the middle pharyngeal constrictor, and spreads out beneath the mucous membrane. The stylopharyngeus is a long, slender muscle, cylindrical above, flattened below. The stylopharyngeus is a muscle in the head that stretches between the temporal styloid process and the pharynx. Hyoglossus lingual artery middle constrictor stylohyoid triticeal cartilage.Stylopharyngeus muscle Anatomy stylopharyngeus muscle The fiber arrangement suggested that, besides constriction of the pharynx, the ascending and descending fibers of the middle constrictor can act as an elevator muscle, and the irregular attachments could affect the functions of the muscles and vessels. The ascending and descending fibers rarely reached the top of the pharynx and the thyroid cartilage, respectively. The three groups were inserted into the pharyngeal raphe, and the descending fibers joined the longitudinal pharyngeal muscles. Some fibers attached to the hyoglossus, occasionally to the stylohyoid and the posterior belly of the digastric, but seldom to the lingual artery and the triticeal cartilage in the thyrohyoid ligament. The posteroinferior group fanned out from the posterior part of the greater horn, while the middle constrictor arose internally to the hyoglossus some fibers often passed externally, and their fibers sometimes intersected around the lingual artery, which ran between them. The middle group ascended posterosuperiorly from the greater horn and fanned out. The anterosuperior group ascended posterosuperiorly from the ligament and the lesser horn and fanned out. The middle constrictor arose from the stylohyoid ligament and the hyoid bone, and its fibers were divided into three overlapping groups. The gross anatomies of the pharyngeal and neighboring muscles were examined in 41 cadavers. This study investigated the attachments of the middle constrictor to clarify its configuration and re-examine its functions. Such arrangements make the interrelationships among pharyngeal muscles complicated. The pharyngeal muscles overlap each other and some of their parts have different areas of origin.
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