20. Cranial Nerves 1-6 Flashcards Preview

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Flashcards in 20. Cranial Nerves 1-6 Deck (39)
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1

What is the name of the first cranial nerve?

Olfactory

2

Where do signals from the olfactory tract go?

Medial and lateral olfactory stria

3

Where do signals from the olfactory stria go?

Temporal lobe

4

Where do olfactory signals from the temporal lobe go?

Olfactory cortex

5

What are the parts of the olfactory cortex?

Piriform cortex
Amygdala
Enterhinal cortex

6

Where do signals from the olfactory cortex go?

Orbitofrontal cortex

7

How can you test the first cranial nerve?

Test smell in each nostril

8

What is the name of the second cranial nerve?

Optic nerve

9

How can you test the second cranial nerve?

Snellen chart
Visual field test
Pupillary light reflex

10

What is the visual field?

Total area of each eye where we can see images

11

What is it called when the visual field is tested using instruments?

Perimetry

12

What is papilloedema?

Swelling of the optic disc

13

What is papilloedema caused by?

Increased ICP

14

What nucleus in the midbrain do some fibres from the eye synapse in?

Pretectorial nucleus

15

What parasympathetic nucleus is stimulated in the pupillary light reflex?

Edinger-Westphal

16

What muscle do post ganglionic parasympathetic neurons act on in the pupillary light reflex?

Constrictor pupillae

17

What does PEARL test?

Pupils Equal and Reactive to Light
Midbrain,
Optic nerve
Occulomotor nerve

18

What is the test for cranial nerves 3, 4 and 6?

Ask patient to keep their head still and ask them to follow your finger as you make a H shape in the air
Watch for nystagmus, diplopsia

19

What is the name of the third cranial nerve?

Occulomotor

20

Which muscles does the occulomotor nerve act on?

Levator palpebrae superioris
superior, inferior and medial rectus
inferior oblique

21

What reflexes travel in III?

Pupillary light reflex
Accommodation

22

Which cranial nerves run in the brainstem midline?

3, 4, 6, 12

23

Which cranial nerves run in the lateral brainstem?

5, 7, 9, 11

24

What is the name of the fourth cranial nerve?

Trochlear

25

Which muscle does the trochlear nerve act on?

Superior oblique

26

Which cranial nerves leave through the pons?

5, 6, 7, 8

27

Which cranial nerves leave through the medulla?

9, 10, 11, 12

28

Which cranial nerves leave above the brainstem?

1, 2

29

Which cranial nerves leave in the brainstem?

3, 4

30

What is the name of the sixth cranial nerve?

Abducens