Trigeminal nerve general info Flashcards
T/F: the trigeminal nerve is the largest of the cranial nerves
True
What kind of fibers are carried by CN V?
motor and sensory, but many more sensory
T/F: CN V is known as the nerve of facial expression
False; CN V is the “great sensory nerve of the face.”
What are the three nuclei of termination for CN V?
Main sensory nucleus, spinal nucleus, and trigeminal mesencephalic nucleus
Which terminal nucleus of CN V deals with pain and temperature?
spinal nucleus
Which terminal nucleus of CN V is located in the midbrain?
Trigeminal mesencephalic nucleus
Which terminal nucleus of CN V receives info like touch, vibration, and joint proprioception?
Main sensory nucleus
What is the nucleus of origin for CN V?
Trigeminal motor nucleus
What is the name of the only peripheral ganglion associated with CN V?
Trigeminal (semilunar) ganglion
What kind of cell bodies are contained in the Trigeminal (Semilunar) ganglion?
sensory
What are the three peripheral branched of CN V?
ophthalmic, maxillary, and mandibular
In the Sensory pathway of CN V, what processes come from the face to the trigeminal ganglion?
peripheral processes
Where do (sensory) central processes from the trigeminal ganglion go after entering the CNS?
main trigeminal nucleus or spinal nucleus
What joint does CN V especially deal with in regard to proprioception?
TMJ
What sensory nucleus of CN V is the lateral spinothalamic tract most associated with?
spinal nucleus
What ganglion do dendrites from the periphery pass to on their way to the mesencephalic nucleus?
trigeminal ganglion
T/F: CN V has the only sensory neurons with cell bodies located in the CNS
true
Axons from the motor nucleus of CN V leave the CNS and travel through which ganglion?
trigeminal ganglion
After leaving the CNS, motor fibers from CN V are carried through which division to supply muscles of mastication?
mandibular branch
T/F: the mandibular branch is the branch of CN V that carries ANY motor fibers.
True
T/F: the motor nucleus of CN V only receives info from the cerebral cortex.
False; it also receives info from the reticular formation, red nucleus, tectum, MLF and mesencephalic nucleus
Where is the apparent origin of the Trigeminal Nerve?
lateral aspect of the pons
What other CN shares an apparent origin with CN V?
none
As CN V leaves its origin, it travel anterior-ward overthe petrous part of the temporal bone and enters a pouch of dura. What are the two names for that pouch?
Trigeminal cave or Meckel’s cave
Where is the trigeminal ganglion located?
Trigeminal (Meckel’s) cave
Where do the three branches of CN V (ophth, max, and mand) arise from?
trigeminal ganglion
