Cranial nerves are nerves that emerge directly from the brain, in contrast to spinal nerves which emerge from segments of the spinal cord. In humans, there are traditionally 12 pairs of cranial nerves. Only the first and the second pair emerge from the cerebrum; the remaining 10 pairs emerge from the brainstem
As the list is important to keep in mind during the examination of the nervous system, there are many mnemonic devices in circulation to help remember the names and order of the cranial nerves. Because the mind recalls rhymes well, the best mnemonics often use rhyming schemes. Three of the best known examples are, "On Old Olympus's Towering Tops, A Fine-Vested German Viewed Some Hops," "Oh, Oh, Oh To Take A Family Vacation! Go Vegas After Hours!" and "Oh, Oh, Oh, To Touch And Feel Very Good Velvet, Ahh, Heaven." A useful mnemonic for remembering which nerves are motor (M), sensory (S), or both (B) is, "Some Say Money Matters But My Brother Says Big Brains Matter Most". There are many more mnemonics from many sources, for example OLd OPie OCcasionally TRies TRIGonometry And Feels VEry GLOomy, VAGUe, And HYPOactive.
As the list is important to keep in mind during the examination of the nervous system, there are many mnemonic devices in circulation to help remember the names and order of the cranial nerves. Because the mind recalls rhymes well, the best mnemonics often use rhyming schemes. Three of the best known examples are, "On Old Olympus's Towering Tops, A Fine-Vested German Viewed Some Hops," "Oh, Oh, Oh To Take A Family Vacation! Go Vegas After Hours!" and "Oh, Oh, Oh, To Touch And Feel Very Good Velvet, Ahh, Heaven." A useful mnemonic for remembering which nerves are motor (M), sensory (S), or both (B) is, "Some Say Money Matters But My Brother Says Big Brains Matter Most". There are many more mnemonics from many sources, for example OLd OPie OCcasionally TRies TRIGonometry And Feels VEry GLOomy, VAGUe, And HYPOactive.
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