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Flashcards in Cranial nerves Deck (114)
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1

How many cranial nerves are there?

12 pairs

2

What do parasympathetic nerves innervate?

Glands, smooth muscle

3

Is there any sympathetic outflow from the skull?

No

4

What nerve fibres are present in olfactory nerve?

Special sensory

5

What nerve fibres are present in optic nerve?

Special sensory

6

What nerve fibres are present in oculomotor nerve?

Motor
Parasympathetic

7

What nerve fibres are present in trochlear nerve?

Motor

8

What nerve fibres are present in trigeminal nerve?

Motor
Sensory

9

What nerve fibres are present in abducens nerve?

Motor

10

What nerve fibres are present in facial nerve?

Motor
Sensory
Parasympathic

11

What nerve fibres are present in vestibulocochlear nerve?

Special sensory

12

What nerve fibres are present in glossopharyngeal nerve?

Sensory
Motor
Parasympathetic

13

What nerve fibres are present in vagus nerve?

Sensory
Motor
Parasympathetic

14

What nerve fibres are present in spinal accessory nerve?

Motor

15

What nerve fibres are present in hypoglossal nerve?

Motor

16

Where does the olfactory nerve fibres pass through the skull?

Cribiform plate of ethmoid

17

What is the name for lost sense of smell?

Anosmia

18

An increase in ICP can result in which eye condition?

Papillodema

19

A lesion at the optic chiasm will result in what type of visual field loss?

Bitemporal hemianopsia

20

A lesion at the right optic tract will result in what type of visual field loss?

left homonymous hemianopsia

21

Which foramen does the optic nerve pass through?

Optic foramen

22

Where do the retinal nerve fibres synapse?

Lateral geniculate body

23

Where does the oculomotor nerve originate?

Midbrain

24

Where does the oculomotor emerge from the skull?

Superior orbital fissure

25

What does the oculomotor supply in the eye?

Extraocular muscles & eyelid
Constricts pupil (circular muscles) & accommodates lens (ciliary muscle)

26

If the oculomotor is lesioned, what will be observed?

Ptosis (eyelid drooping)
Eyeball abducted and pointing down
No pupillary reflex
No accommodation

27

Where does the trochlear nerve exit the skull?

Superior orbital fissure

28

What does the trochlear nerve supply?

Superior oblique (turns eye down)

29

What happens is the trochlear nerve is lesioned?

Diplopia (On looking down)

30

Where does the abducent nerve originate?

Pons