Cranial Nerve x Fiber types x embryonic origins

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Last updated 8:30 PM on 9/24/26

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24 Terms

1

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CN I fiber type

Olfactory: SVA

2

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CN II fiber type

Optic: SSA

3

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CN III fiber type

Oculomotor: GSE, GVE

4

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CN IV fiber type

Trochlear: GSE

5

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CN V fiber type

Trigeminal: GSA, SVE

6

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CN VI fiber type

Abducens: GSE

7

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CN VII fiber type

Facial: SVE, GVE, SVA, GSA

8

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CN VIII fiber type

Vestibulocochlear: SSA

9

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CN IX fiber type

Glossopharyngeal: SVE, GVE, SVA, GSA, GVA

10

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CN X fiber type

Vagus: SVE, GVE, SVA, GSA, GVA

11

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CN XI fiber types

Accessory: GSE

12

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CN XII fiber types

Hypoglossal: GSE

13

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What is the embryonic origin of CN I?

olfactory: placode

14

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What is the embryonic origin of CN II?

Optic: Placode

15

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What is the embryonic origin of CN III?

oculomotor: Somite

16

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What is the embryonic origin of CN IV?

Trochlear: Somite

17

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What is the embryonic origin of CN V?

Trigeminal: Visceral Arches

18

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What is the embryonic origin of CN VI?

Abducent: Somite

19

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What is the embryonic origin of CN VII?

Facial: visceral arches

20

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What is the embryonic origin of CN VIII?

Vestibulocochlear: placode

21

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What is the embryonic origin of CN IX?

Glossopharyngeal: Visceral Arches

22

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What is the embryonic origin of CN X?

Vagus: Visceral Arches

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What is the embryonic origin of CN XI?

Accessory: Somite

24

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What is the embryonic origin of CN XII?

Hypoglossal: Somite