What are the tests of the 12 pairs of cranial nerves? The examination of the 12 pairs of cranial nerves are as follows: first, the examination of the olfactory nerve, the examination of the olfactory nerve, generally using a test tube containing a liquid, the liquid requires no special smell, so that the patient can identify which kind of liquid after smelling; second, the examination of the optic nerve, at present more often use the visual acuity table; third, the examination of the eye movement, including the motoneurotic nerve, the nerve and the abducens nerve, mainly to Fourth, the trigeminal nerve, including the sensory and motor branches of the trigeminal nerve, which is generally difficult to determine under normal circumstances, can be clarified through examination after the appearance of lesions; fifth, the facial nerve, the facial nerve also includes the patient’s sensory and motor nerves, you can open your mouth to check whether the patient’s face is symmetrical; sixth, the auditory nerve, vestibular nerve Sixth, the auditory nerve, the vestibulocochlear nerve, the paracentral nerve, the paracentral nerve, and so on, mainly let the patient shrug his shoulders to check whether the patient’s sternocleidomastoid muscle is damaged; seventh, the hypoglossal nerve, when the hypoglossal nerve is examined, we can let the patient stretch his tongue to see whether the tongue is restricted and whether the tongue muscle is atrophied.