Neuroanatomy - Dry Room (Week 2)

Question 1

Name the cranial nerves and their foramen

Answer 1

Question 2

Base of the brain + the nerves

Answer 2

Question 3

What bone does CN I (olfactory) pass through to enter which cranial fossa?

Answer 3

Ethmoid plate –> anterior cranial fossa

Question 4

What type of fibres are present in CN I?

Answer 4

Special sensory (smell)

Question 5

What type of fibres are in cranial nerve II?

Answer 5

Special sensory- vision

Question 6

What type of fibres are present in cranial nerves III, IV and VI?

Answer 6

oculomotor (III)- motor + parasympathetic

trochlear (IV)- motor

abducens (VI)- motor

Question 7

What types of fibres are present in trigeminal (CN V) nerve branches?

Answer 7

V1 ophthalmic= general sensory

V2 maxillary= general sensory

V3 mandibular= general sensory and motor

Question 8

What type of fibres are present in facial (CN VII) nerve?

Answer 8

Parasympathetic- sensory and motor

Question 9

What types of fibre is present in vestibulocochlear (CN VIII) nerve?

Answer 9

Special sensory (hearing + balance)

Question 10

What types of fibres are present in glossopharyngeal (CN IX) nerve?

Answer 10

parasympathetic- motor and sensory

Question 11

What two branches of the vagus nerve innervate the muscles of the larynx?

Answer 11

Superior laryngeal

Recurrent laryngeal nerve

Question 12

What plexus does the vagus nerve form a part of and what does it innervate?

Answer 12

pharyngeal plexus- Innervates all muscles of pharynx except stylopharyngeus

Question 13

What types of fibres are present in vagus (CN X) nerve?

Answer 13

parasympathetic, sensory and motor

Question 14

What type of fibre is present in hypoglossal (CN XII) nerve?

Answer 14

motor

Question 15

Which of the cranial nerves have parsymathetic component?

Answer 15

3, 7, 9 + 10

Question 16

which CN are directly attached to brain?

Answer 16

CN I and II

Question 17

Which CN are directly attached to midbrain?

Answer 17

III, IV

Question 18

Which is the only cranial erve to arise from the posterior aspect of the brain?

Answer 18

II- optic

Question 19

Which CN is attached directly to the pons?

Answer 19

V-trigeminal

Question 20

Which CN are attached directly to pontomedullary junction?

Answer 20

VI, VII, VIII

Question 21

Which CN are attached directly to medulla?

Answer 21

IX, X, XI, XII (final 4 CN)

Question 22

Which cranial nerve can be tested by the pupillary light reflex?

Answer 22

oculomotor (III)

Question 23

Which cranial nerve would be tested if you asked the patient to stick their tongue out?

Answer 23

Hypoglossal (XII)