CNs

Question 1

Which Cranial nerve(s) come from the midbrain?

Answer 1

CNs Oculomotor N. (III) and Trochlear N. (IV). (DOUBLE CHECK, MAY BE EDINGER-WESTPHAL)

Question 2

Cranial nerve V comes from what part of the brain stem?

Answer 2

Mid pons

Question 3

Which 2 cranial nerves come from the pontomedullary junction?

Answer 3

CNs Abducens N. (VI) and Facial N. (VII).

Question 4

Where do Cranial nerves 9,10 & 11 originate from?

Answer 4

Medulla

Question 5

Where is the nuclei for Cranial nerve 3 located?

Answer 5

Rostral midbrain

Question 6

Edinger Wesphal nuclei has fibers of what kind?

Answer 6

Preganglionic parasympathetic (accessory nerve of Oculomotor CN3) Innervates 2 smooth muscles.

Question 7

This cranial nerve exits from the dorsal side of the brainstem. (The only one that does that)

Answer 7

CN 4 Trochlear n.

Question 8

Cranial nerve 4 (Trochlear N) is located inferior to what landmark?

Answer 8

Inferior colliculus.

Question 9

The lower motor neuron of which motor neuron decussates (will cross, forming an ‘X’)?

Answer 9

CN 4 Trochlear N.

Question 10

Cranial nerve 6 passes directly through which tract?

Answer 10

Corticospinal