Cranial Nerve

Question 1

Accessory

Answer 1

11 - Roots arise from motor neurons in the first 5 cerivcal spinal cord segments, they ascend and enter the cranial cavity through foramen magnum

Question 2

Hypoglossal

Answer 2

12 - Rootlets from anterior surface of medulla, pass anteriorly across the posterior cranial fossa

Question 3

Oculomotor

Answer 3

3 - Between midbrain and pons; ventral side of brainstem, inferior to mammillary bodys, cerebral peduncle

Question 4

Olfactory

Answer 4

1 - Olfactory bulb

Question 5

Trigeminal

Answer 5

5 - Anterolateral pons

Question 6

Optic

Answer 6

2 - Optic chiasm, superior to infundibulum

Question 7

Trochlear

Answer 7

4 - Cerebellar peduncle (inferior to: inferior colliculus, superior to: superior cerebellar peduncle and lateral lemniscus

Question 8

Abducent

Answer 8

6 - Ventral aspect of brainstem; between the pons and medulla (medially)

Question 9

Vestibulocochlear

Answer 9

8 - Dosal aspect of brainstem (superior to: inf. Cerebellar peduncle; inferior to fasciculus gracilis)

Question 10

Vagus

Answer 10

10 - Anterolateral aspect of medulla, behind the olive inferior to the glossopharyngeal nerve

Question 11

Glossopharyngeal

Answer 11

9 - Rootlets from anterolateral aspect of upper medulla o.

Question 12

Facial

Answer 12

7 - Ventral aspect of brainstem between the pons and medulla (laterally)