![]() The fibers that make up the accessory nerve enter the skull through. The pharyngeal branch of the glossopharyngeal nerve arises prior to the. It is formed by the pharyngeal branches from the vagus and glossopharyngeal nerves and the cervical sympathetic 3-7. pharyngeal artery, cervical sympathetic chain, lower cranial nerves IX to XII. Levator palati, azy gos uvulse (goat), constrictors of pharynx (superior and inferior), palato-pharyngeus laryngeal muscles. It is supplied by the vagus nerve (CN X). ( C ) The inferior alveolar nerve and the lingual nerve pass between the. Most of the fibers of the accessory nerve originate in neurons situated in the upper spinal cord. The pharyngeal plexus sends some branches between the middle and inferior constrictors and other branches between the superior and middle constrictors 4,6. The inferior pharyngeal constrictor muscle is a skeletal muscle of the neck. Cranial nerve XI is responsible for tilting and rotating the head, elevating the shoulders, and adducting the scapula. So this double vagal innervation of the CPM from superior and inferior laryngeal nerves participates in the laryngo-pharyngeal coordination specially for swallowing. Superior, middle, and inferior pharyngeal constrictors. The superior laryngeal nerve by its lateral branch supplies the anterior part of the CPM. The pharyngeal nerves form a plexus with glossopharyngeal and sympathetic fibres. An auricular branch supplies the exterior of the ear drum, posterior wall of the external auditory meatus and cranial surface of the auricle. The recurrent laryngeal nerve through its dorsal branch supplies the posterior part of the muscular bundles of the CPM. In the jugular foramen a meningeal nerve branches off to supply the dura mater in the posterior cranial fossa. The main branches include the ascending pharyngeal artery, facial artery, lingual artery, and maxillary artery. The blood supply for the muscles is provided by the external carotid artery. All other muscles are supplied by the vagus nerve (CN X). 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 stylopharyngeus muscle is supplied by the glossopharyngeal nerve (CN IX). Measures were obtained with a micro-digital caliber. together with the IX cranial nerve, the pharyngeal plexus innervating the. Micro-dissections were carried out thanks to a Leica microscope. Three of its four large branches (buccal nerve, inferior alveolar nerve and. The glossopharyngeal nerve (Latin: nervus glossopharyngeus), the ninth cranial nerve (CN IX), is a mixed cranial nerve, which provides motor innervation to. ![]() Six normal adult human pharynges (12 sides) obtained from cadavers were studied. 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.
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