These results provide information that will help a comprehensive understanding of the effects of pharyngeal muscles on movement. The variant muscle bundles play their own role in pharyngeal movement according to their morphology. 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. Glossopharyngeal nerve Glossopharyngeal part of the superior pharyngeal constrictor muscle Lingual branch Palatoglossus muscle Palatopharyngeal muscle Stylopharyngeal muscle.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. The simultaneous contraction of the palatopharyngeal and palatoglossus muscles on the pharyngeal stage of deglutition may aid in the passage of bolus from the oral cavity to the midpharyngeal cavity by increasing pharyngeal pressure. These neuromuscular arrangements may suggest the presence of specialized constrictive movements of the midpharygeal cavity at the level of the base of the tongue with the retrusive movement of the tongue. Which is the only muscle of the pharynx supplied by the glossopharyngeal nerve a. We observed that, after branching to the stylopharyngeal muscle, the lingual branch of the glossopharyngeal nerve branched to the glossopharyngeal part of the superior pharyngeal constrictor muscle, the palatopharyngeal and the palatoglossus muscles before inserting into the space between the muscle layers of the superior and middle pharyngeal constrictors. Which muscle takes origin from the stylohyoid ligament and lesser cornu of hyoid a. Nerve fiber of the lingual branch of the glossopharyngeal nerve (main root of the glossopharyngeal nerve) was examined by the use of a binocular stereomicroscope. Gross anatomy The pharyngeal nerve divides off the maxillary division just after emerging from the foramen. Six en bloc samples (9 sides), including the tissue from the skull base to the hyoid bone were obtained from adult human cadavers. The pharyngeal nerve is a small branch of the maxillary division of the trigeminal nerve and contributes to the pterygopalatine ganglion. The purpose of this study is to identify the contribution of the lingual branch of the glossopharyngeal nerve to the neuro-motor control of three muscles: the glossopharyngeal part of the superior pharyngeal constrictor muscle, the palatopharyngeal and the palatoglossus muscles. This group of muscles constrict the midpharyngeal cavity during retrusive movement of the tongue. Head and Neck Anatomy Mnemonics are great if you’re in dental school, preparing for licensing exams, or want to refresh your. Fibers of the glossopharyngeal part of the superior constrictor muscle are connected with fibers of the transverse lingual muscle, forming a ring of muscle at the base of the tongue. These videos will take you on a journey starting with the very basics of head anatomy with illustrations and 3D images to help you better imagine the different bones and how the foramina connect different spaces.
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