Glossopharyngeal Nerve Functional Components

February 26 2017 Anatomy Cranial Nerves Head and Neck functional components of cranial nerves. Although the glossopharyngeal nerve is primarily a sensory nerve it also carries autonomic and somatic motor fibers.

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Impulses are along the optic nerve and optic tract to the lateral geniculate bodies of the diecephalon.

Glossopharyngeal nerve functional components. There are six main nerves derived from the. It exits the brainstem out from the sides of the upper medulla just rostral closer to the nose to the vagus nerve. 1- olfactory 2- optic 8- vestibulocochlear. It is characterised by. The glossopharyngeal nerve carries sensory efferent motor and parasympathetic fibers. Both have motor and autonomic branches with nuclei of origin in the.

4 rows Following are the nuclei functional components of glossopharyngeal nerve. The glossopharyngeal nerve CN IX is a mixed nerve that provides muscular sensory and parasympathetic innervation to structures of the head and neck. Carries general senses from viscera. CNs IX glossopharyngeal nerve and X vagus nerve. Comprise the optic nerve. At the inferior margin of the stylopharyngeus several branches arise to provide motor innervation.

They are known as the superior and inferior or petrous ganglia they contain the cell bodies of the sensory fibres in the glossopharyngeal nerve. About half the fibers decussate in the optic chiasma. Muscle derived from. The vestibular and cochlear nuclei are located in the extreme lateral and dorsolateral parts of the medulla. This video is about the glossopharyngeal nerve its functional components nucleus of origin course relations branches in detail. Clinical disorders of Glossopharyngeal nerve.

NERVES LISTED ACCORDING TO FUNCTIONAL COMPONENTS. It contains sensory fibers from the pharynx tongue posterior one-third and the tonsils. The Glossopharyngeal and Vagus Nerves. Laryngeal and pharyngeal function. Glossopharyngeal nerve origin an course and termination of glossopharyngeal nerve functional component of the nerve sensory and motor component of glossopha SlideShare uses cookies to improve functionality and performance and to provide you with relevant advertising. Both conduct general somatic afferents as well as general.

It exits the brainstem out from the sides of the upper medulla just anterior to the vagus nerve. The motor division of the glossopharyngeal nerve is derived from the basal plate of the embryonic medulla oblongata while the sensory division. Now extracranial the glossopharyngeal nerve descends down the neck anterolateral to the internal carotid artery. Carries general somatic senses touch pain temperature pressure vibration proprioceptive senses from muscles joints. Structure and Function. How do you test the Glossopharyngeal nerve.

Special visceral efferent fibers branchial motor are the main. FUNCTIONAL COMPONENTS of cranial nerves AFFERENTSENSORY SOMATIC VISCERAL GENERAL SPECIAL GENERAL SPECIAL GSA. GLOSSOPHARYNGEAL NERVE INTRODUCTION. The ninth cranial nerve is the glossopharyngeal nerve and contains many different types of fibers within it. Terms in this set 7 General sensory afferent. The motor division of the glossopharyngeal.

The glossopharyngeal nerve is comprised of branchial motor visceral motor and special and general sensory fibers. A lesion affecting only the glossopharyngeal nerve is rare. Ask the patient to cough assessing CN X Ask the patient to open the mouth wide and say ah using a tongue depressor to visual the palate and posterior pharyngeal wall assessing CN IX and X The soft palate should move upwards centrally. Branchial motor to stylopharyngeus muscle. T he glossopharyngeal CN IX and vagus CN X nerves are intimately related and similar in function. BRANCHES IN TEMPORAL BONE.

This ninth cranial nerve has a close relation to the vagus nerve both structurally and functionally. BRANCHES OF THE MAIN TRUNK. The glossopharyngeal nerve known as the ninth cranial nerve is a mixed nerve that carries afferent sensory and efferent motor information. 5- trigeminal 7- facial 9- glossopharyngeal 10- vagus. The glossopharyngeal nerve has many functions including receiving various forms of sensory fibers from parts of the tongue carotid. EXIT FROM CRANIAL CAVITY.

The optic II nerve also is associated with the SSA. Special visceral efferent SVE. Glossopharyngeal Nerve CN IX FUNCTIONAL COMPONENTS. 3- oculomotor 4. The loss of or reduction in the gag reflex usually elicited by stroking the lateral wall of the pharynx near the tonsilar fossa. The glossopharyngeal nerve or CN IX carries motor and sensory fibers to and from the rostral pharynx palate larynx and tongue.

The glossopharyngeal nerve provides motor function to the stylopharyngeus muscle. The glossopharyngeal nerve known as the ninth cranial nerve CN IX is a mixed nerve that carries afferent sensory and efferent motor information. This chapter will review the detailed anatomy of the glossopharyngeal nerve. Located in the pharynx which is the portion of your throat behind the nose and mouth this muscle is involved in swallowing. The glossopharyngeal nerve also contains a parasympathetic component that innervates the parotid and zygomatic salivary glands. Its branches consist of tympanic tonsillar stylopharyngeal carotid sinus nerve branches to the tongue lingual branches and a communicating branch to cranial nerve X vagus nerve.

Expand titleShow Names of the cranial nerves. Cranial Nerves Functional Components. Glossopharyngeal and Vagus Nerves. The SSA functional component is provided by the vestibulocochlear VIII nerve which conveys impulses from the sensory apparati ie semicircular canals otolith organs organ of Corti.

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