Neuroanatomy - Spinal and cranial nerves
5 important questions on Neuroanatomy - Spinal and cranial nerves
What nerves does the ventral root contain?
What is the first neuron in the sensory chain?
Where do the cranial nerves emerge?
The caudalmost brainstem is very similar to the spinal cord; likewise, the caudalmost cranial nerves are very similar to the spinal nerves
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What kind of neurons do cranial nerves consist of?
Sensory: first neuron is a pseudo-unipolar neuron (peripheral ganglion)
Motor: originate from motor neurons located in a nucleus in the brainstem
What are the functions of the 12 cranial nerves?
2. Opticus = vision
3. Oculomotoriuis = eye movements
4. Trochlearis = eye movements
5. Trigeminus = tactile face; mastication
6. Abduncens = eye movements
7. Facialis = mimical muscles; gustation
8. Vestibulocochlearis = equilibrium; audition
9. Glossopharyngeus = swallowing; gustation
10. Vagus = autonomous parasympathetic; swallowing
11. Accessories = neck musculature
12. Hypoglossus = tongue muscles
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