The glossopharyngeal nerve provides motor innervation to the stylopharyngeus muscle and the superior constrictor pharyngeal muscle. With sensory fibers the nerve supplies the root of the tongue (including the vallate papillae), as well as the mucosa of the tympanic cavity, the auditory tube, and the mastoid cells.
What Does The Glossopharyngeal Nerve Innervate?
Stylopharyngeus muscle Eustachian tube Middle ear Carotid sinus Carotid body
How Do You Test Glossopharyngeal Nerve?
The glossopharyngeal nerve provides sensory supply to the palate. It can be tested with the gag reflex or by touching the arches of the pharynx.
Which Is The Major Function Of The Glossopharyngeal Nerve?
The glossopharyngeal nerve’s main functions are initiating swallowing and the gag reflex, but it has other functions as well. These are broken into the five pathways the nerve has outside of the brain. The special sensory branch provides taste sensation form the taste buds located in the posterior third of the tongue.
Is The Glossopharyngeal Nerve Sympathetic Or Parasympathetic?
The glossopharyngeal nerve provides parasympathetic innervation to the parotid gland. These fibres originate in the inferior salivatory nucleus of CN IX. These fibres travel with the tympanic nerve to the middle ear. From the ear, the fibres continue as the lesser petrosal nerve, before synapsing at the otic ganglion.
What Triggers Glossopharyngeal Neuralgia?
Glossopharyngeal neuralgia is generally caused by a small blood vessel that presses on the nerves as they exit the brainstem. This condition is caused by irritation of the ninth cranial nerve by a blood vessel, and is most commonly seen in people over age 40.
Which Lobe Does The Glossopharyngeal Nerve Send Information To?
The glossopharyngeal nerve (IX): This nerve receives sensory information from the tonsils, the pharynx, the middle ear, and the rest of the tongue.
Where Does The Glossopharyngeal Nerve Exit The Skull?
It exits the medulla oblongata from the postolivary sulcus, the glossopharyngeal nerve passes laterally across the flocculus, and leaves the skull through the pars nervosa of the jugular foramen in a separate sheath of the dura mater. It then passes between the internal jugular vein and internal carotid artery.
Where Is The Vagus Nerve Located?
The vagus nerve runs from the brain through the face and thorax to the abdomen. It is a mixed nerve that contains parasympathetic fibres. The vagus nerve has two sensory ganglia (masses of nerve tissue that transmit sensory impulses): the superior and the inferior ganglia.
What Does Glossopharyngeal Mean?
Medical Definition of glossopharyngeal 1 : of or relating to both tongue and pharynx. 2 : of, relating to, or affecting the glossopharyngeal nerve glossopharyngeal lesions.
Is The Glossopharyngeal Nerve Sensory Or Motor?
The glossopharyngeal nerve is the 9th cranial nerve (CN IX). It is one of the four cranial nerves that has sensory, motor, and parasympathetic functions. It originates from the medulla oblongata and terminates in the pharynx.
What Is Glossopharyngeal?
The glossopharyngeal nerve is the ninth (IX) cranial nerve, which arises from the brainstem inside the skull. It supplies sensation to the back of the throat and tongue and portions of the ear (Fig. The glossopharyngeal nerve begins in the brainstem and exits the skull at the jugular foramen.
Is Glossopharyngeal Neuralgia Serious?
Glossopharyngeal neuralgia. Glossopharyngeal neuralgia is a rare condition in which there are repeated episodes of severe pain in the tongue, throat, ear, and tonsils. This can last from a few seconds to a few minutes.
What Is The Function Of The Vagus Nerves?
The vagus nerve is the longest nerve of the autonomic nervous system and is one of the most important nerves in the body. The vagus nerve helps to regulate many critical aspects of human physiology, including the heart rate, blood pressure, sweating, digestion, and even speaking.
What Happens When The Hypoglossal Nerve Is Damaged?
Damage to the hypoglossal nerve causes paralysis of the tongue. Usually, one side of the tongue is affected, and when the person sticks out his or her tongue, it deviates or points toward the side that is damaged. Treatments for damage include tongue exercises, speech therapy, and, in rare cases, surgery.
What Happens If The Vestibulocochlear Nerve Is Damaged?
The vestibulocochlear nerve is responsible for both hearing and balance and brings information from the inner ear to the brain. Problems with the vestibulocochlear nerve can result in vertigo, vomiting, ringing in the ears, a false sense of motion, motion sickness, or even hearing loss.
What Is The Origin Of The Vagus Nerve?
The vagus nerve originates from the medulla of the brainstem. It exits the cranium via the jugular foramen, with the glossopharyngeal and accessory nerves (CN IX and XI respectively).
How Do You Test For Vagus Nerve Damage?
To test the vagus nerve, a doctor may check the gag reflex. During this part of the examination, the doctor may use a soft cotton swab to tickle the back of the throat on both sides. This should cause the person to gag. If the person doesn’t gag, this may be due to a problem with the vagus nerve.