What is a glossopharyngeal nerve?
What is a glossopharyngeal nerve?
The glossopharyngeal nerve is the ninth set of 12 cranial nerves (CN IX). It provides motor, parasympathetic and sensory information to your mouth and throat. Among its many functions, the nerve helps raise part of your throat, enabling swallowing.
What is the job of the glossopharyngeal nerve?
As stated above, the glossopharyngeal nerve provides motor innervation to the stylopharyngeus muscle, which is responsible for elevating the pharynx and larynx.
Where is the glossopharyngeal nerve?
Structure and Location The glossopharyngeal nerve exits the cranial cavity (skull) through a structure called the jugular foramen, which is a large opening in the base of the skull. It then gives off a branch called the tympanic nerve, which goes through the temporal bone to reach the middle ear.
What nerve controls the tongue?
Hypoglossal Nerve
The Hypoglossal Nerve is the 12th Cranial Nerve (Cranial Nerve XII). It is mainly an efferent nerve for the tongue musculature. The nerve originates from the medulla and travels caudally and dorsally to the tongue.
What is the function of the glossopharyngeal nerve quizlet?
It provides sensory information about taste, sensation to the tongue and pharynx and information from chemo/baro-receptors in the carotid artery.
Which is the major function of the glossopharyngeal nerve quizlet?
The glossopharyngeal nerve is cranial nerve IX. Its major motor function is to help in swallowing.
What nerve controls taste?
The facial nerve (CN VII) innervates the anterior two thirds of the tongue, the glossopharyngeal nerve (CN IX) innervates the posterior one third of the tongue, and the vagal nerve (CN X) carries taste information from the back part of the mouth, including the upper third of the esophagus.
What nerve helps you chew gum?
The trigeminal nerve is responsible for sensory enervation of the face and motor enervation to muscles of mastication (chewing).
What is the responsibility of the hypoglossal nerve?
The hypoglossal nerve enables tongue movement. It controls the hyoglossus, intrinsic, genioglossus and styloglossus muscles. These muscles help you speak, swallow and move substances around in your mouth.
What is the responsibility of the hypoglossal nerve quizlet?
The hypoglossal nerve controls tongue movements.
Why do we taste salty?
Salt (sodium chloride) imparts salty taste, one of the fundamental taste qualities. The transductive mechanism(s) underlying saltiness most likely includes a highly specific sodium channel in taste receptor cells.
What nerve controls sense of smell?
Olfactory nerve
Olfactory nerve (CN I) The olfactory nerve is a solely sensory nerve and conveys the sense of smell. Its receptors are located in the olfactory mucosa under the roof of the nasal cavity.