Anatomy

Question 1

How many sets of paired nerves arise directly from the brain?

Answer 1

cranial nerves - 12 sets of paired nerves

Question 2

Which of the cranial nerves arise from the cerebrum?

Answer 2

The first two nerves
1 - olfactory
2 - optic

Question 3

Which of the cranial nerves emerge from the brainstem?

Answer 3

All 10 apart from 1 (olfactory) and 2 (optic)

Question 4

What are the components of the “brain stem”?

Answer 4

The midbrain, pons and medulla

Question 5

What is the IV cranial nerve and where does it arise?

Answer 5

Trochlear Nerve

Comes from posterior side of midbrain, longest intracranial length of all CNs

Question 6

How are the cranial nerves numbered?

Answer 6

They are numbered by their location on the brain stem.
Superior to inferior, then medial to lateral.

As well as the order of their exit from the cranium (anterior to posterior) - through the canals, fissures and foramen

Question 7

What is the III cranial nerve and where does it arise?

Answer 7

Oculomotor

Midbrain-pontine junction - boundary of the pons and the midbrain

Question 8

What is the V cranial nerve and where does it arise?

Answer 8

Trigeminal

Pons

Question 9

What is the VI cranial nerve and where does it arise?

Answer 9

Abducens

Pontine-medulla junction

Question 10

What is the VII cranial nerve and where does it arise?

Answer 10

Facial

Pontine-medulla junction

Question 11

What is the VIII cranial nerve and where does it arise?

Answer 11

Vestibulocochlear

Pontine-medulla junction

Question 12

What is the IX cranial nerve and where does it arise?

Answer 12

Glossopharyngeal

Medulla oblongata - posterior to the olive

Question 13

What is the X cranial nerve and where does it arise?

Answer 13

Vagus

Medulla oblongata - posterior to the olive

Question 14

What is the XI cranial nerve and where does it arise?

Answer 14

Accessory

Medulla oblongata - posterior to the olive

Question 15

What is the XII cranial nerve and where does it arise?

Answer 15

Hypoglossal

Medulla oblongata - anterior to the olive

Question 16

What is the the I cranial nerve and where does it exit the cranium?

Answer 16

Olfactory

Cribiform plate

Question 17

What is the the II cranial nerve and where does it exit the cranium?

Answer 17

Optic

optic canal

Question 18

What is the the III cranial nerve and where does it exit the cranium?

Answer 18

Oculomotor

Superior orbital fissure

Question 19

What is the the IV cranial nerve and where does it exit the cranium?

Answer 19

Trochlear

Superior orbital fissure

Question 20

What is the the V cranial nerve and where does it exit the cranium?

Answer 20

Trigeminal

Has three divisions
V1 (Opthalmic) - superior orbital fissure
V2 (Maxillary) - Foramen Rotundum
V3 (Mandibular) - Foramen Ovale

Question 21

What is the the VI cranial nerve and where does it exit the cranium?

Answer 21

Abducens

Superior orbital fissure

Question 22

What is the the VII cranial nerve and where does it exit the cranium?

Answer 22

Facial

Internal acoustic meatus

Question 23

What is the the VIII cranial nerve and where does it exit the cranium?

Answer 23

Vestibucocchlear

Internal acoustic meatus

Question 24

What is the the IX cranial nerve and where does it exit the cranium?

Answer 24

Glossopharyngeal

Jugular foramen

Question 25

What is the the X cranial nerve and where does it exit the cranium?

Answer 25

Vagus

Jugular foramen

Question 26

What is the the XI cranial nerve and where does it exit the cranium?

Answer 26

Accessory

Jugular foramen

Question 27

What is the the XII cranial nerve and where does it exit the cranium?

Answer 27

Hypoglossal

Hypoglossal canal