Gag reflex testing demo. Testing Trapezius and SCM function. Manual muscle testing demo. Testing tongue movements. Tongue strength and motion testing demo.
Damage to central visual processing systems can result in visual disturbances or field cuts. The video provides an example of a patient with a R visual field cut. No sound. This patient demonstrates unilateral sensory dysfunction in the Trigeminal nerve.
Recall that the the Trigeminal nerve is the primary nerve anesthetized during dental procedures. The tongue will deviate toward the affected weaker side when the patient is prompted to stick out their tongue.
The examiner sound only is assessing both eye motor function and coordination of eye and head motions which includes CN VIII. All Rights Reserved.
Date last modified: September 16, Face sensation and motor Lateral eye movement Face sensory and motor, taste Hearing and balance. Check for differences in the sizes of the right and left pupils. Trigeminal Nerve V The trigeminal nerve has both sensory and motor functions. To test the motor part of the nerve, tell your partner to close his or her jaws as if he or she was biting down on a piece of gum. To test the sensory part of the trigeminal nerve, lightly touch various parts of your partner's face with piece of cotton or a blunt object.
Be careful not to touch your partner's eyes. Although much of the mouth and teeth are innervated by the trigeminal nerve, don't put anything into your subject's mouth.
Facial Nerve VII The motor part of the facial nerve can be tested by asking your partner to smile or frown or make funny faces. The sensory part of the facial nerve is responsible for taste on the front part of the tongue.
You could try a few drops of sweet or salty water on this part of the tongue and see if your partner can taste it. Vestibulocochlear Nerve VIII Although the vestibulocochlear nerve is responsible for hearing and balance, we will only test the hearing portion of the nerve here. Have your partner close his or her eyes and determine the distance at which he or she can hear the ticking of a clock or stopwatch. Also the glossopharyngeal nerve is responsible for taste on the back part of the tongue.
You could try a few drops of salty or sugar water on this part of the tongue and see if your partner can taste it. Spinal Accessory Nerve XI To test the strength of the muscles used in head movement, put your hands on the sides of your partner's head. The spinal portion originates in the upper part of your spinal cord. The cranial part starts in your medulla oblongata. These parts meet briefly before the spinal part of the nerve moves to supply the muscles of your neck while the cranial part follows the vagus nerve.
Your hypoglossal nerve is the 12th cranial nerve which is responsible for the movement of most of the muscles in your tongue. It starts in the medulla oblongata and moves down into the jaw, where it reaches the tongue.
Learn about its symptoms, diagnosis, and treatment. Have trouble blinking or closing your eyes to sleep? You might have lagophthalmos. Learn what causes this condition and how to treat it.
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We review the procedure along…. Health Conditions Discover Plan Connect. The 12 Cranial Nerves. Medically reviewed by Deborah Weatherspoon, Ph.
Olfactory nerve II. Optic nerve III. Oculomotor nerve IV. Trochlear nerve V. Trigeminal nerve VI. Abducens nerve VII.
Facial nerve VIII. Vestibulocochlear nerve IX. Glossopharyngeal nerve X. Vagus nerve XI. Accessory nerve XII. Hypoglossal nerve Cranial nerve diagram What are cranial nerves? Keep reading to learn more about each of the 12 cranial nerves and how they function.
Olfactory nerve. Optic nerve. Oculomotor nerve.
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