How do you check cranial nerve 9 and 10?

With bilateral weakness neither side of the palate will elevate and there will be marked nasal air escape. The gag reflex tests both the sensory and motor components of CN 9 & 10. This involuntary reflex is obtained by touching the back of the pharynx with the tongue depressor and watching the elevation of the palate.

Similarly one may ask, what are cranial nerves 9 and 10?

CRANIAL NERVE 9 (GLOSSOPHARYNGEAL) AND CRANIAL NERVE 10 (VAGUS) CNs 9 and 10 work together to supply the musculature of the pharynx (mostly supplied by CN 10) and transmit visceral afferent information from vascular baroreceptors, and each nerve also has additional individual functions listed below.

Furthermore, what nerve is responsible for swallowing? The glossopharyngeal nerve has both a sensory and motor division. The areas innervated include the tongue base and lateral pharyngeal walls, which are important in triggering the reflexive portion of the pharyngeal swallow.

In respect to this, what does the 9th cranial nerve control?

Glossopharyngeal nerve. The glossopharyngeal nerve is a paired set of nerves, which is part of the 24 cranial nerves. The glossopharyngeal nerve has many functions, including receiving various forms of sensory fibers from parts of the tongue, carotid body, the tonsils, the pharynx, and the middle ear.

Which nerve is responsible for gag reflex?

glossopharyngeal nerve

How do you know you have gag reflex?

There is no standardization of how the gag reflex is tested:

1. Most texts recommend touching the posterior pharynx, but some recommend touching the back of the tongue.
2. The instrument used and amount of pressure applied to the pharynx isn't standardized.

Where is the 10th cranial nerve located?

Vagus nerve, also called X cranial nerve or 10th cranial nerve, longest and most complex of the cranial nerves. The vagus nerve runs from the brain through the face and thorax to the abdomen.

What does the 10th cranial nerve control?

The vagus nerve, historically cited as the pneumogastric nerve, is the tenth cranial nerve or CN X, and interfaces with the parasympathetic control of the heart, lungs, and digestive tract. The vagus nerves are normally referred to in the singular.

What does cranial nerve 9 do?

The glossopharyngeal nerve, known as the ninth cranial nerve (CN IX), is a mixed nerve that carries afferent sensory and efferent motor information. It exits the brainstem out from the sides of the upper medulla, just anterior (closer to the nose) to the vagus nerve.

What are the 10 cranial nerves?

The twelve cranial nerves, in order from I to XII are: olfactory nerve, optic nerve, oculomotor nerve, trochlear nerve, trigeminal nerve, abducens nerve, facial nerve, vestibulocochlear nerve, glossopharengeal nerve, vagus nerve, spinal accessory nerve, and hypoglossal nerve.

What are the symptoms of cranial nerve damage?

Cranial nerve disorders can cause a variety of symptoms, including:

• Intermittent attacks of excruciating facial pain.
• Vertigo (dizziness)
• Hearing loss.
• Weakness.
• Paralysis.
• Facial twitch.

What muscles does cranial nerve 9 innervate?

The glossopharyngeal nerve (ninth cranial nerve, CN IX, latin: nervus glossopharyngeus) is a mixed cranial nerve. The glossopharyngeal nerve provides motor innervation to the stylopharyngeus muscle and the superior constrictor pharyngeal muscle.

How do you assess cranial nerve 2?

Cranial Nerve II Hold the chart 14 inches from the patient's face, and ask the patient to cover one of their eyes completely with their hand and read the lowest line on the chart possible. Have them repeat the test covering the opposite eye.

Where is 7th cranial nerve located?

The facial nerve is the seventh cranial nerve, or simply CN VII. It emerges from the pons of the brainstem, controls the muscles of facial expression, and functions in the conveyance of taste sensations from the anterior two-thirds of the tongue.

What will be the effect of paralysis of 9th nerve?

Infection such as skull base osteomylitis, skull base fractures, or neoplasms may affect the three nerves in concert, resulting in ipsilateral vocal fold, palate, and shoulder weakness. Paralysis of the stylopharyngeus muscle will be undetected by the patient if the vagus nerve is intact.

Is Glossopharyngeal neuralgia serious?

Glossopharyngeal neuralgia complications Complications may include: Slow pulse and fainting may occur when pain becomes severe. Medications used to treat this condition may have side effects.

What is the function of the vagus nerves?

The most important function of the vagus nerve is afferent, bringing information of the inner organs, such as gut, liver, heart, and lungs to the brain. This suggests that the inner organs are major sources of sensory information to the brain.