Twelve pairs of cerebral nerve examination methods

Twelve pairs of cranial nerves are olfactory nerve, optic nerve, oculomotor nerve, trochlear nerve, trigeminal nerve, abducens nerve, facial nerve, vestibulocochlear nerve, glossopharyngeal nerve, vagus nerve, accessory nerve and hypoglossal nerve in turn. After smelling different odors with the nose, check whether the olfactory nerve is damaged; after checking whether there is any decline in vision, visual field defect and optic nerve restriction; The oculomotor nerve, trochlear nerve and abducent nerve are examined by looking at whether the movement of the eyeball in different directions is limited; the trigeminal nerve is mainly responsible for the sensory and masticatory muscles of the face, and whether the sensory branches of the trigeminal nerve are damaged is judged by cotton swabs; whether the motor branches of the trigeminal nerve are damaged is judged by checking whether the masticatory muscles are strong; the facial nerve is mainly responsible for the movement of facial expression muscles, and whether the facial nerve is damaged is judged by checking whether the facial nerve has facial paralysis; Hearing and balance of vestibulocochlear nerve canal can be checked by tuning fork, and Rinne test and Weber test can be used to determine whether the patient has conductive deafness and sensorineural deafness; after the movement of glossopharyngeal nerve, vagus nerve and throat muscle is damaged, hoarseness and dysphagia will be shown; after listening to the patient's voice, whether the uvula of pharynx is deviated or not, and whether the upper jaw is drooping, it is determined whether the glossopharyngeal nerve and vagus nerve of the patient are damaged; Hypoglossal nerve is mainly tube extension tongue has no deviation, so determine whether the hypoglossal nerve is damaged.