5 Questions
Which cranial nerve extends into the thoracic and abdomen viscera?
Cranial nerve X
Which cranial nerves innervate only head and neck structures?
Cranial nerves V and VII
What are the three types of functional classification of cranial nerves?
Motor, Sensory, and Mixed
Where do the cell bodies of sensory neurons of cranial nerves lie?
In the cranial sensory ganglia
What is the mnemonic for remembering the 12 cranial nerves in their proper order?
Oh, Oh, Oh, To Touch And Feel Very Good Velvet, Ahh
Study Notes
Cranial Nerve Classification
- The vagus nerve (CN X) is the cranial nerve that extends into the thoracic and abdomen viscera.
Cranial Nerve Distribution
- Cranial nerves III, IV, VI, and XII innervate only head and neck structures.
Functional Classification
- Cranial nerves are functionally classified into three types:
- Somatic motor nerves (move skeletal muscles)
- Somatic sensory nerves (transmit sensory information from the head and neck)
- Visceral nerves (regulate involuntary functions of the body, such as digestion and heart rate)
Cranial Nerve Anatomy
- The cell bodies of sensory neurons of cranial nerves lie in the sensory ganglia.
Cranial Nerve Mnemonic
- The mnemonic "On Old Olympus' Towering Top, A Finn And German Viewed Some Hops" is used to remember the 12 cranial nerves in their proper order.
Test your knowledge of the cranial nerves with this quiz! Learn about the functions and attachments of these important nerves that innervate the head and neck structures.
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