Cranial Nerve pathways Flashcards Preview

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Flashcards in Cranial Nerve pathways Deck (14)
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1
Q

Olfactory CNI

A

Receptors in olfactory epithelium of nasal cavity, olfactory nerve fibres pass through holes in cribriform plate of ethmoid bone and enter olfactory bulb in the anterior cranial fossa

2
Q

Optic CNII

A

Enters via optic canal, nerves then join to form optic chiasm,
then fibres from medial (nasal) half of each retina cross to form optic tract

3
Q

Oculomotor CNIII

A

emerges from midbrain and exits via superior orbital fissure

4
Q

Trochlear CNIV

A

emerges from dorsal surface of the mid brain and exits via the superior orbital fissure

5
Q

Trigeminal Ophthalmic CNV1

A

emerges from the pons, travels through the trigeminal ganglion and exits via the superior orbital fissure

6
Q

Trigeminal Maxillary CNV2

A

Emerges from the pons, travels through the trigeminal ganglion and exits via the foramen rotundum

7
Q

Trigeminal Mandibular CNV3

A

Emerges from the pons, travels through the trigeminal ganglion and exits via the foramen ovale

8
Q

Abducent CNVI

A

emerges between pons and medulla and exits exits via the superior orbital fissure

9
Q

Facial CNVII

A

Emerges between pons and medulla and exits via internal acoustic meatus, facial canal and stylomastoid foramen

10
Q

Vestibulocochlear CNVIII

A

Emerges from between pons and medulla and exits via internal acoustic meatus, dividing into vestibular and cochlear nerves

11
Q

Glossopharryngeal CNIX

A

Emerges from medulla and exits via jugular foramen

12
Q

Vagus CNX

A

emerges from medulla and exits via jugular foramen, then everywhere

13
Q

Accessory CNXI

A

small cranial (medulla) and large spinal roots exit via jugular foramen

14
Q

Hypoglossal CN XII

A

Emerges from medulla and exits through the hypoglossal canal