Containing both sensory and motor components, the glossopharyngeal nerve provides somatic motor innervation to the stylopharyngeus muscle, visceral motor innervation to the parotid gland, and carries afferent sensory fibers from the posterior third of the tongue, pharynx, and tympanic cavity.
What muscles does the glossopharyngeal nerve innervate?
As stated above, the glossopharyngeal nerve provides motor innervation to the stylopharyngeus muscle, which is responsible for elevating the pharynx and larynx.
Does the glossopharyngeal nerve innervate the heart?
All of these three cranial nerves are involved in the complex and important functions of the body, such as blood pressure regulation, heart rate, breathing, swallowing and vomiting.
What does glossopharyngeal nerve control?
There are a number of functions of the glossopharyngeal nerve. It controls muscles in the oral cavity and upper throat, as well as part of the sense of taste and the production of saliva. Along with taste, the glossopharyngeal nerve relays general sensations from the pharyngeal walls.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.
What is the tympanic nerve?
Medical Definition of tympanic nerve : a branch of the glossopharyngeal nerve arising from the petrosal ganglion and entering the middle ear where it takes part in forming the tympanic plexus. — called also Jacobson’s nerve.
What nerve Innervates swallowing?
The coordinated swallowing movements involve the tongue, which is suspended on the hyoid apparatus and innervated by the hypoglossal nerve (XII), and the larynx and pharynx, which are primarily controlled by the nucleus ambiguus and nucleus solitarius in the caudal brainstem through the glossopharyngeal (IX), vagus (X) …
What does the motor portion of the glossopharyngeal nerve cranial nerve IX innervate quizlet?
Motor Nerve innervate stylopharyngeal muscle of the pharynx for swallowing.What is innervated by the vagus nerve?
The vagus nerve runs from the brain through the face and thorax to the abdomen. … The recurrent laryngeal nerve branches from the vagus in the lower neck and upper thorax to innervate the muscles of the larynx (voice box). The vagus also gives off cardiac, esophageal, and pulmonary branches.
What's the function of the oculomotor nerve?The oculomotor nerve is the third cranial nerve (CN III). It allows movement of the eye muscles, constriction of the pupil, focusing the eyes and the position of the upper eyelid. Cranial nerve III works with other cranial nerves to control eye movements and support sensory functioning.
Article first time published onWhat are the functions of the oculomotor nerve quizlet?
What are the functions of the oculomotor nerve? Nerve III controls muscles that turn eyeball up,down, and medially as well as controlling the iris, lens, and the upper eyelid.
Which of the following is a function of the oculomotor nerve quizlet?
The oculomotor nerve supplies the extraocular muscles that move the pupil up, down, in, and up and in, as well as the pupillary reflexes.
What cranial nerve is Glossopharyngeal?
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 foramen does the glossopharyngeal nerve pass through?
On passing through the jugular foramen, the glossopharyngeal nerve then passes between the internal carotid artery and the internal jugular vein, descending in front of the artery. It then passes deep to the styloid process and related muscles attaching on to this bony prominence.
What initiates swallowing?
The reflex is initiated by touch receptors in the pharynx as a bolus of food is pushed to the back of the mouth by the tongue, or by stimulation of the palate (palatal reflex). Swallowing is a complex mechanism using both skeletal muscle (tongue) and smooth muscles of the pharynx and esophagus.
Is tympanic nerve a branch of Glossopharyngeal?
Jacobson nerve is the eponymous name of the tympanic branch of the glossopharyngeal nerve (CN IX) and arises from the inferior ganglion of the glossopharyngeal nerve. It also carries preganglionic parasympathetic fibers, from the inferior salivary nucleus, which eventually enter the otic ganglion.
What Innervates the tympanic membrane?
Nerve supply The inner surface of the tympanic membrane is innervated by the glossopharyngeal nerve.
What is the tympanic membrane made of?
The tympanic membrane is made up of a thin connective tissue membrane covered by skin on the outside and mucosa on the internal surface.
What does the phrenic nerve innervate?
The phrenic nerve originates from the anterior rami of the C3 through C5 nerve roots and consists of motor, sensory, and sympathetic nerve fibers. It provides complete motor innervation to the diaphragm and sensation to the central tendon aspect of the diaphragm.
Which muscle is innervated by the XII hypoglossal nerve?
Hypoglossal Nerve Stimulation The hypoglossal nerve (cranial nerve XII) innervates both the tongue protrusor (genioglossus) and retrusor (styloglossus and hyoglossus) muscles through its medial and lateral divisions.
What does recurrent laryngeal nerve innervate?
The recurrent laryngeal nerve (RLN) branches off the vagus nerve (cranial nerve X) and has an indirect course through the neck. It supplies innervation to all of the intrinsic muscles of the larynx, except for the cricothyroid muscles, as well as sensation to the larynx below the level of the vocal cords.
What is the vagus nerve responsible for quizlet?
The Vagus Nerve (CN X) Innervates the skin of the external acoustic meatus and tympanic membrane, plus the internal surfaces of the laryngopharynx and larynx. Provides visceral sensation to the heart and abdominal viscera. Also provides sensory fibers to the meninges.
Which type of basic reflex includes the pupillary response and accommodation?
The accommodation reflex (or near response) is a three-part reflex that brings near objects into focus through lens thickening, pupillary constriction, and inward rotation of the eyes—eye convergence.
Which percentage of the population has a dominant left hemisphere including those who are left handed?
Representing only 10 percent of the general human population, left-handers have been viewed with suspicion and persecuted across history. The word “sinister” even derives from “left or left-hand.”
What are oculomotor neurons innervated by?
MuscleActionInnervationLateral rectusAbduct eyeAbducens, uncrossed
What extraocular muscle does the trochlear nerve IV innervate?
The only muscle the trochlear nerve innervates, the superior oblique muscle, is the longest and thinnest muscle among the extraocular muscles.
Is the oculomotor nerve sympathetic or parasympathetic?
In addition, as discussed in the section on autonomic innervation, the oculomotor nerve carries the parasympathetic preganglionic axons that synapses in the ciliary ganglion, and whose postganglionic axons innervate the pupillary sphincter and ciliary muscles of the eye.
What is Vestibulocochlear?
The vestibulocochlear is made up of two nerves—the cochlear nerve, which is responsible for hearing, and the vestibular nerve, which is responsible for balance. As one of the 12 cranial nerves, it runs between the pons (the middle of the brainstem) and the medulla oblongata (the lower part of the brainstem).
Which is a function of the hypoglossal XII nerve quizlet?
CN XII is responsible for tongue movement. CN XI is responsible for neck and shoulder movement. CN IX is responsible for taste in the posterior two thirds of the tongue, pharyngeal sensation, and swallowing.
What are three major functions of the cranial nerves quizlet?
sensory of touch, pain, and temperature for the eye, upper and lower jaw. Great sensory nerve of the face. Provides sensory nerves for the anterior 2/3 of the tongue and motor innervation to the face muscles. Sensory muscle for taste, salivary glands, and lacrimal glands.
Which of the following 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.
