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Flashcards in Cranial Nuclei Deck (21):
1

What is CN1 and its function?

Olfactory - smell

2

Where does CN1 exit the skull?

Cribiform plate

3

What is CN2 and its function?

Optic - sight

4

Where does CN2 exit the skull?

Optic foramen

5

What is CN3 and what is its function?

Occulomotor
Motor
• levator palpabrae superiori
• inferior branch - middle rectus
• inferior rectus
• inferior oblique

6

Where does CN3 exit the skull?

Superior orbital fissure

7

What would a lesion in CN3 result in?

Loss of motor control of the eye

8

What is CN4 and what is its function?

Trochlear
Motor - superior oblique

9

Where does CN4 exit the skull?

Superior Orbital Fissure

10

What is CN5 and what is its function?

Trigeminal
Sensation to face
Motor - muscles of mastication

11

Where does CN5 exit the skull?

1) Superior orbital fissure,
2) Foramen Rotundum,
3) Foramen Ovale

12

What is CN6 and its function?

Abducens
Motor - lateral rectus

13

Where does CN6 exit the skull?

Superior Orbital Fissure

14

What is CN 7 and its function?

Facial
Facial expression muscles
Salivary secretions from submandibular and sublingual

15

Where does CN 7 exit the skull?

Internal Acoustic Meatus

16

What is CN 8 and its function?

Vestibularcochlear nerve
Hearing, balance and equilibrium

17

Where does CN8 exit the skull?

Internal Acoustic Meatus

18

What is CN9 and what is its function?

Glossopharyngeal
Sensation from the pharynx,
Taste in posterior third of tongue
Motor of stylopharyngeal muscle

19

Where do CN 9, 10 and 11 exit the skull?

Jugular foramen

20

What is CN10 and its function?

Vagus
Parasympathetic control of viscera
Motor control of larynx
Sensation of larynx

21

What is CN11 and its function?

Spino accessory
Motor of trapezius and sternocleidomastoid muscles