![]() ![]() Its mucosa layer is continuous with the oral cavity, its. It also forms part of the upper respiratory tract and the gastrointestinal tract. The oropharynx forms part of the pharynx, being the continuation of the oral cavity and nasopharynx superiorly, and the larynx and hypopharynx inferiorly. Whereas, in contrast to other muscles of the pharynx, it terminates into the circular. Cricopharyngeus had its origin from the cricoid cartilage. Inferior pharyngeal constrictor This muscle is split into two distinct muscle groups. Gemellus inferior muscle:- Anatomy, Origin, insertion, Function, exercise. Whereas, the others insert into the inferior pharyngeal constrictor muscle by overlapping the fibers. These results provide information that will help a comprehensive understanding of the effects of pharyngeal muscles on movement. Citation, DOI, disclosures and article data. The Inferior pharyngeal constrictor, the thickest of all three constrictors. ![]() The variant muscle bundles play their own role in pharyngeal movement according to their morphology. The action of constrictor muscles: During the process of swallowing contraction of the upper fibres of the superior constrictor will pull the pharyngeal wall forwards. A variation of the STP, in which it ran transversely and merged with the SC muscle, was found in 2.3% (1/44) of cases while a variation of the SC muscle, in which it ran longitudinally and merged with the contralateral constrictors, was found in 11.4% (5/44). The accessory bundle of STP and petropharyngeus was found in 18.2% (8/44) and 25.0% (11/44) of cases, respectively. Forty-four specimens (22 right and 22 left sides) from embalmed Korean adult cadavers (13 males, 9 females age range, 46–89 years mean age, 69.2 years) were used in this study. The inferior border of the laryngopharynx connects to the esophagus, whereas the anterior portion connects to the larynx, allowing air to flow into the bronchial tree. The aims of this study were to clarify the topography and variations stylopharyngeus (STP) and superior constrictor (SC) muscles, and to examine what role they play in the pharyngeal movement. ![]()
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