![]() ![]() So this double vagal innervation of the CPM from superior and inferior laryngeal nerves participates in the laryngo-pharyngeal coordination specially for swallowing. The superior laryngeal nerve by its lateral branch supplies the anterior part of the CPM. Below the inferior ganglion it receives the cranial part of the accessory nerve which is distributed mainly through the pharyngeal and recurrent laryngeal. Thyropharyngeus : lower pharyngeal raphe: ACTION Aids swallowing. It is the starting point for the peristaltic transport of food to the stomach. Swallowing sounds like a simple physiological human function, but it is a complex, multifaceted process involving a variety of muscles and nerves. laryngeal nerve (motor function to the inferior constrictor and cricothyroid muscle). The recurrent laryngeal nerve through its dorsal branch supplies the posterior part of the muscular bundles of the CPM. Cricopharyngeus: continuous with muscle of opposite side, behind pharynx. Deglutition or swallowing is an innate function. and no reports of the stylopharyngeus muscle (cranial nerve IX). The superior laryngeal nerve produces of two branches: the internal laryngeal nerve (its sensory branch) which supplies sensory. It arises from the middle of the inferior ganglion of vagus nerve and additionally also receives a sympathetic branch from the superior cervical ganglion. The morphological feature of the cricopharyngeal muscle (CPM) showed three different muscular bundles: superior oblique muscle fibers are joining the inferior pharyngeal constrictor muscle, horizontal circular muscle fibers are 11 to 12mm high, and 3mm thick, inferior oblique muscle fibers are joining external layer of the superior oesophagus. The superior laryngeal nerve is a branch of the vagus nerve. ![]() Measures were obtained with a micro-digital caliber. 3 longitudinal elevators - stylopharyngeus, salpingopharyngeus, palatopharyngeus muscles. Micro-dissections were carried out thanks to a Leica microscope. Superior, middle, inferior pharyngeal constrictor 2. It exits the brainstem out from the sides of the upper medulla, just rostral to the vagus nerve and has sensory, motor, and autonomic components (TA: nervus glossopharyngeus or nervus cranialis IX). If the process fails and the material (such as. Swallowing is an important part of eating and drinking. Six normal adult human pharynges (12 sides) obtained from cadavers were studied. The glossopharyngeal nerve is the ninth cranial nerve (CN IX). Swallowing, sometimes called deglutition in scientific contexts, is the process in the human or animal body that allows for a substance to pass from the mouth, to the pharynx, and into the esophagus, while shutting the epiglottis. More specifically, the nucleus ambiguus in the reticular formation is part of the swallowing center, and it is responsible for generating general somatic efferent signals. The aim of our study has been to describe the cricopharyngeal muscle and its nerve supply from the recurrent laryngeal nerve and from the superior laryngeal nerve. The pharyngeal phase is under autonomic control of the swallowing center located in the lower pons and medulla oblongata of the brainstem.
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