![]() ![]() This is the point of attachment for the superior pharyngeal constrictor muscle. anterior to the foramen magnum, is the pharyngeal tubercle which gives attachment to the fibrous raphe of the pharynx, also known as the pharyngeal raphe. "Hyoid bone syndrome: A degenerative injury of the middle pharyngeal constrictor muscle with photomicroscopic evidence of insertion tendinosis". On the lower surface of the basilar part of occipital bone, about 1 cm. Its role in Hyoid bone syndrome: Ernest, Edwin A."Botulinum Neurotoxin for Pharyngeal Constrictor Muscle Spasm in Tracheoesophageal Voice Restoration". Woodrow Weiss.Respiratory function of velopharyngeal constrictor muscles during wakefulness in normal adults. Its role in speech: Hamaker, Ronald C."Respiratory-related activation and mechanical effects of the pharyngeal constrictor muscles". "Adaptation in the function of pharyngeal constrictor muscles". ^ Rowe LD, Miller AJ, Chierici G, Clendenning D (August 1984).Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). ![]() ^ a b c d e f g Standring, Susan (2020).They also have respiratory mechanical effects. The muscle contracts during swallowing: as soon as the bolus of food is received in the pharynx, the elevator muscles relax, the pharynx descends, and the constrictors contract upon the bolus, and convey it downward towards the esophagus. The contraction of the muscle constricts the middle portion of the pharynx. Similarly to the superior and inferior pharyngeal constrictor muscles, it is innervated by a branch of the vagus nerve through the pharyngeal plexus. The muscle inserts (posteriorly) into the pharyngeal raphe, blending with its contralateral partner at the midline. The chondropharyngeal part represents the muscle's anterior origin. Chondropharyngeal part - arises from the lesser cornu of the hyoid bone, and (the inferior portion of) the stylohyoid ligament.Ceratopharyngeal part - arises (the entire superior margin of) the greater cornu of the hyoid bone.Two parts of the middle pharyngeal constrictor muscle are distinguished according to its sites of origin: 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. The middle pharyngeal constrictor is a sheet-like, fan-shaped muscle. It acts to propel a bolus downwards along the pharynx towards the esophagus, facilitating swallowing. It is innervated by a branch of the vagus nerve through the pharyngeal plexus. The middle pharyngeal constrictor originates from the greater cornu and lesser cornu of the hyoid bone, and the stylohyoid ligament. It is smaller than the inferior pharyngeal constrictor muscle. It is one of three pharyngeal constrictor muscles. The middle pharyngeal constrictor is a fan-shaped muscle located in the neck. The superior pharyngeal constrictor muscle is an unusual skeletal muscle in that it is very dynamic and complex in function. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |