![]() ![]() In addition to contributing to swallowing, it also opens the Eustachian tube to equalise the pressure in the middle ear. ![]() Salpingopharyngeus - originates from the Eustachian tube and inserts onto the pharyngeal wall.Palatopharyngeus - originates from the hard palate of the oral cavity and inserts onto the pharyngeal wall.Unlike the other pharyngeal muscles, it is innervated by the glossopharyngeal nerve (CN IX).Stylopharyngeus - originates from the styloid process of the temporal bone and inserts onto the pharyngeal wall.They act to shorten and widen the pharynx, and elevate the larynx during swallowing. The longitudinal muscles are the stylopharyngeus, palatopharyngeus and salpingopharyngeus. ![]() Visible are the circular muscles of the pharynx, and the stylopharyngeus. Fig 4 - Lateral view of the deep structures of the pharynx.
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