How many cranial nerves are there?
Nerves arising directly from the brain are called cranial nerves, while those arising from the spinal cord are called peripheral nerves. How many cranial nerves are there? There are 12 cranial nerves that come in pairs, one on each side of the brain. These nerves pass from the brain though openings in the skull called foramina, to supply various parts of the head and neck, although some have extensions to the body.
The cranial nerves each have a name, but they are also known by their corresponding Roman numerals, which name them from the topmost to the bottommost location of origin in the brain. These nerves have various sensory, motor, and other functions, which are important to your well-being and proper functioning.

Part 1: How Many Cranial Nerves Are There?
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Aside from the face and the tongue, it also supplies parts of the ear canal, the salivary glands, the lacrimal (tear) glands, the nasal cavity and the palate.
Depending on the extent and point of injury to the facial nerve, you may experience facial paralysis, loss of eye blinking, and drooling.

Vestibulocochlear nerve (VIII)
This is a motor nerve that gives you the sense of hearing as well as balance. Its two components consist of the vestibular and the cochlear nerves. The vestibular nerve helps you maintain a sense of balance while the cochlear nerve enables you to hear sounds. Injury to the vestibular nerve will cause dizziness and loss of balance while injury to the cochlear nerve may result in deafness.

Glossopharyngeal nerve (IX)
This sensory nerve carries information from throat (pharynx) and some areas of the palate and tongue. It also innervates the salivary glands and performs motor function that helps you swallow food.
The glossopharyngeal nerve is derived from the third branchial arch. It has several branches such as the pharyngeal, the lingual and the tympanic nerve