Unit 3 Trigeminal nerve

Question 1

The trigeminal nerve is ______, but it carries mostly _______ fibers.

Answer 1

Trigeminal nerve is mixed, but it carries mostly sensory fibers.

Question 2

The three nuclei of termination associated with the trigeminal nerve are:

Answer 2

1. Main sensory nucleus
2. Spinal nucleus
3. Trigeminal mesencephalic (midbrain) nucleus

Question 3

The one nucleus of origin for the trigeminal nerve is:

Answer 3

Trigeminal motor nucleus

Question 4

Name the one peripheral ganglion that is associated with the trigeminal nerve.

Answer 4

Trigeminal (semilunar) ganglion

Question 5

Name the branches of trigeminal nerve V1=___________, V2=___________, and V3=___________.

Answer 5

V1= Ophthalmic
V2= Maxillary
V3= Mandibular

Question 6

Sensory cell bodies of trigeminal nerve are found in the __________ _________

Answer 6

Trigeminal ganglion

Question 7

Sensory peripheral processes come from the face and go to _________ ganglion.

Answer 7

Trigeminal ganglion

Question 8

Central processes from the trigeminal ganglion enter the CNS and go to the _________ __________ nucleus and the _______ nucleus.

Answer 8

Main sensory nucleus

Spinal nucleus

Question 9

Central processes going to the main sensory nucleus could be carrying what types of sensory info?

Answer 9

Touch, vibration and joint proprioception

Question 10

Central processes going to the spinal nucleus could be carrying what types of sensory info?

Answer 10

Pain and temperature

Question 11

The cell bodies for the _________ __________ are located in the CNS, these are the only sensory neurons that have cell bodies located here.

Answer 11

mesencephalic nucleus

Question 12

Sensory neurons traveling to the ________ nucleus pass through the ________ ganglion, but do not synapse.

Answer 12

Mesencephalic nucleus

Trigeminal ganglion

Question 13

The only branch in the trigeminal nerve to carry motor fibers is the ________ branch

Answer 13

Mandibular branch for the muscles of mastication

Question 14

The apparent origin of the trigeminal nerve:

Answer 14

Lateral aspect of the pons; there is only one branch leaving the pons, no splitting has occurred yet

Question 15

The trigeminal ganglion travels over the _________ part of the temporal bone and enters the ___________ cave. This is where the __________ _________ is found.

Answer 15

Petrous part of the temporal bone
Trigeminal (meckel’s) cave
Trigeminal Ganglion