Trigeminal Systems

Question 1

Trigeminal system consists of ___ and the 3 cranial nerves ___, ___, ___ which contribute GSA fibers

Answer 1

Trigeminal N (CN V)
CN VII
IX
X

Question 2

CN V nucleus is located at the level of ___

Answer 2

Pons

Question 3

CN VII, IX, X are located at level of ___

Answer 3

Medullla

Question 4

Spinal trigeminal tract is a homologous of dorsolateral tract of ___

Answer 4

Lissauer

Question 5

Spinal trigeminal tract receives ___, ___, ___ and ___ input from CN V, VII, and X

Answer 5

Pain
Temp
Light touch

Question 6

TTT=

Answer 6

Trigeminal thalamic tract

Question 7

Dorsal TTT projects (Contralateral/ Ipsilateral)?

Answer 7

Ipsilaterally

Question 8

2nd order axons ___ in the ventral posterior medial nucleus of thalamus

Answer 8

Decussate

Question 9

Decussate=

Answer 9

Cross over

Question 10

Dorsal TTT are the rostral equivalent to the ___system and (DO/ DO NOT) cross over

Answer 10

DC/ ML

Do Not cross over

Question 11

4 types of trigeminal nuclei:

Answer 11

Main sensory
Spinal trigeminal
Mesencephalic
Trigeminal motor

Question 12

Trigeminal motor nucleus has what type of fibers?

Answer 12

SVE

Question 13

Spinal trigeminal nucleus located in ___, ___, and ____

Answer 13

Pons
Medulla
Spinal cord

Question 14

Spinal trigeminal nucleus is similar to ___ system

Answer 14

Anterolateral system

Question 15

Trigeminal motor nucleus receives ___ input

Answer 15

Bilateral corticobulbuar

Question 16

3 trigeminal reflexes:

Answer 16

Jaw jerk
Corneal reflex
Lacrimal reflex

Question 17

Corneal reflect leads to:

Answer 17

Lacrimal reflex

Question 18

Corneal reflex test ___ of the afferent limb

Answer 18

Ophthalmic N (CN V1)

Question 19

Corneal reflex tests the ___ of the efferent limb

Answer 19

Facial N (CN VII)

Question 20

Alternating hemianesthesia is a characteristic of ___ syndrome

Answer 20

PICA

Question 21

PICA=

Answer 21

Posterior inferior cerebellar artery

Question 22

Spinal trigeminal tract and ALS are served by the ___ (artery)

Answer 22

PICA