21. Cranial Nerves 7-12 Flashcards Preview

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Flashcards in 21. Cranial Nerves 7-12 Deck (49)
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1

What are the 3 types of motor fibres?

Somatic
Branchiomotor
Parasympathetic

2

What are the 3 types of sensory fibres?

Somatic
Visceral and taste
Special

3

Which cranial nerves have somatic motor fibres?

3, 4, 6, 12

4

Which cranial nerves have branchiomotor fibres?

5c, 7, 9, 10, 11

5

Which cranial nerves have parasympathetic motor fibres?

3, 7, 9, 10

6

Which cranial nerves have somatic sensory fibres?

5, 7, 9, 10

7

Which cranial nerves have visceral sensory fibres?

7, 9, 10

8

Which cranial nerves have special sensory fibres?

1, 2, 8

9

What are the motor functions of CN VII?

Branchiomotor to second arch (facial expresion
Parasympathetic secretomotor

10

What ganglion contains the sensory nerve bodies of VII?

Geniculate ganglion

11

What are the sensory functions of VII?

Somatosensory to the ear
Visceral sensory taste to hard palate and anterior 2/3 of tongue

12

How can you test CN VII?

Test each facial muscle
Corneal reflex

13

Where does CN VIII emerge?

Cerebellopontine angle

14

Where are the vestibular and cochlear nuclei found?

Floor of the 4th ventricle

15

Where do signals from the cochlear nuclei go?

Inferior coliculi
Medial geniculate body

16

Where does CN IX emerge?

Behind the olives of the medulla

17

What are the motor functions of CN IX?

Branchiomotor to 3rd arch: stylopharyngeus
Parasympathetic to otic ganglion

18

What ganglion is associated with branchiomotor CN IX?

Nucleus ambiguus

19

What are the sensory functions of CN IX?

Somatic (superior ganglion) to the tympanic membrane and posterior 1/3 of tongue
Visceral (inferior ganglion) to oropharynx and taste to posterior 1/3 of tongue, carotid body

20

What will happen to the uvula if the nucleus ambiguus is damaged?

Uvula deviates away from the side of the lesion

21

What are the motor functions of CN X?

Branchiomotor to 4th and 6th arches: swallowing and phonation
Parasympathetic to thoracoabdominal region

22

What are the sensory functions of CN X?

Somatic to internal laryngeal nerve
Visceral taste to valleculae and to viscera in heart and abdomnen

23

What are the two parts of CN XI?

Cranial
Spinal

24

What is the course of the cranial accessory nerve?

Runs with X in the nucleus ambiguus

25

How is the spinal accessory nerve tested?

Test sternocleidomastoid and trapezius

26

What is the motor function of CN XII?

Somatic to the tongue

27

Where does CN XII emerge from?

between pyramids and olives of the medulla

28

What will happen to the tongue if there is a lesion of XII?

Tongue will deviate towards the side of the lesion

29

What does a lesion of III cause?

Occular palsy

30

What does a lesion of V cause?

Weakness of jaw and numbness of face