Cranial Nerve
Cranial Nerve
Cranial Nerves (pronunciation: /ˈkreɪniəl ˈnɜːrvz/) are a set of twelve paired nerves that emerge directly from the brain. The etymology of the term "Cranial Nerve" is derived from the Latin words "Cranium" meaning skull and "Nervus" meaning nerve.
Overview
The twelve cranial nerves, in order from I to XII are: Olfactory, Optic, Oculomotor, Trochlear, Trigeminal, Abducens, Facial, Vestibulocochlear, Glossopharyngeal, Vagus, Accessory, and Hypoglossal.
Function
Each cranial nerve has a specific function that is either sensory, motor, or both. Sensory nerves are involved in the relay of information about the environment to the brain, while motor nerves control muscle movements.
Related Terms
- Neurology: The branch of medicine dealing with disorders of the nervous system.
- Neuron: The basic working unit of the brain, a specialized cell designed to transmit information to other nerve cells, muscle, or gland cells.
- Neuroanatomy: The study of the structure and organization of the nervous system.
External links
- Medical encyclopedia article on Cranial Nerve
- Wikipedia's article - Cranial Nerve
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