Cranial Nerves Chart

The olfactory nerve cn i and optic nerve cn ii originate from the cerebrum. List of the 12 cranial nerves with concise information about the name number and functions of each. The trigeminal abducens and facial nerves arise in the pons.

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They can arise from a specific part of the brain stem midbrain pons or medulla or from a junction between two parts.

Cranial nerves chart. 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. Cranial nerves chart i. Using a penlight. The trigeminal nerve has three divisions which are.

Cranial nerve ii optic sensory vision visual acuity snellen chart cover eye not being examined test for visual fields examine with ophthalmoscope cranial nerve iii oculomotor sensory and motor primarily motor eyelid and eyeball movement move eye up down and peripherally test for accommodation pupillary constriction observe for ptosis. V 1 ophthalmic nerve is located in the superior orbital fissure v 2 maxillary nerve is located in the foramen rotundum. The cranial nerves consist of 12 paired nerves that arise from the brainstem. The oculomotor and trochlear cranial nerves stem from the midbrain.

The ophthalmic division sends sensory information from the upper part of your face including your forehead scalp and upper eyelids. The functions of the cranial nerves are sensory motor or both. A cranial nerve may also be classified as sensory motor or both according to their mode of signal transmission. Cranial nerves iii xii arise from the brain stem figure 1.

Sensory cranial nerves help a person to see smell and hear. V 3 mandibular nerve is located in the foramen ovale. Receives sensation from the face and innervates the muscles of mastication. The cranial nerves listed here are i olfactory ii optic iii oculomotor iv trochlear v trigeminal vi abducens vii facial viii vestibulocochlear ix glossopharyngeal x vagus xi accessory and xii hypoglossal.

This division communicates sensory information from the middle part of your face. Ask the client to smell and identify the smell of cologne with each nostril separately and with the eyes. The twelve cranial nerves in order from i to xii are. There are twelve cranial nerves in total.

Motor cranial nerves help control muscle movements in the head and neck. The olfactory and optic nerves arise from the anteriorportion of the brain called the cerebrum. Provide adequate lighting and ask client to read from a reading material held at a distance of 36 cm. Mainly motor nuclei lying under the floor of the fourth ventricle pons.

Motor nerves carry impulses from the brain to target tissues such as muscles and glandular tissues while sensory nerves transmit impulses from sensory organs to the brain. The table below shows an overview of the cranial nerves.