Cranial Nerves Flashcards Preview

3 Neuroanatomy > Cranial Nerves > Flashcards

Flashcards in Cranial Nerves Deck (27):
1

List the cranial nerves

olfactory
optic
oculomotor
trochlear
trigeminal
abducens
facial
vestibulochochlear
glossopharyngeal
vagus
accessory
hypoglossal

2

Mnemonic for cranial nerves modality

sensory, motor or both (mixed)
CN I some
CN II say
CNIII money
CN IV matters
CN V but
CN VI my
CN VII brother
CN VIII says
CN IX big
CN X boobs
CN XI matter
CNXII more

3

CN I, the olfactory nerve, synapses in the thalmus (T/F)

False
-synapses in the olfactory bulb, continues as olfactory tract to the olfactory cortex

4

Which cranial nerve arises from the spinal cord?

CN XI, spinal accessory nerve

5

What are the functions of the Trigeminal nerve?

1. Sensation of the face
2. Proprioception of chewing
3. Motor control of mastication

6

What are the functions of the Facial nerve?

1. Motor (muscles of facial ex[ression)
2. Taste to anterior 2/3 of tongue
3. Parasympathetics to submandibular and sublingual glands

7

What are the functions of CN IX, glossopharyngeal nerve?

1. taste from posterior 1/3 of tongue
2. sensory from posterior tongue and upper pharynx

8

Where are the solitary nucleus, salivatory nucleus and nucleus ambiguous located?

brainstem

9

What faramina does the Olfactory nerve exit the cranium via?

Cribriform plate of the ethmoid

10

Optic nerve exits the cranium through the _____

orbit

11

How is the optic nerve tested?

acuity
Ishihara- colour vision
Visual fields
Pupillary reflexes
Fundoscopy

12

Occuomotor nerve, trochlear nerve and the abducens nerve exit the cranium via the _____

superior orbital fissure

13

Vestibulocochlear nerve exits the cranium via the ____ _____ ____

Vestibulocochlear nerve exits the cranium via the internal acoustic meatus

14

How is CN VIII tested?

Rinnie and Weber test

15

Spinal Accessory leaves the cranium via______

Spinal Accessory leaves the cranium via the foramen magnum

16

How is CN XI tested?

shrug shoulders (trapezius)
turn head against resistnace (sternocleidomastoid)

17

CN XII exits the cranium via the _____ _____

CN XII exits the cranium via the hypoglossal canal

18

How is Hypoglossal nerve tested?

tongue movements
-tongue 'points' towards side of lesion

19

CN V1 leaves the cranium via the ____, CN V2 via _____ and CN V3 via _____

CN V1 leaves the cranium via the superior orbital fissure, CN V2 via foramen rotundum and CN V3 via foramen ovale

20

What nerve supplies the muscles of mastication (masseter, temporalis and pterygoids) and the tensor tympani muscle?

CN V3

21

How does the facial nerve exit the cranium?

via the Internal acoustic meatus, followed by the stylomastoid foramen

22

What does the facial nerve supply?

-taste to anterior 2/3 of tongue
-parasympathetics to submandibular and sublingual glands
-stapedius muscle
-muscles of facial expression

23

Via what cranial foramen does the Glossopharyngeal nerve (CNIX) exit the cranium?

jugular foramen

24

What does the glossopharyngeal nerve, CN IX, supply?

-parotid gland parasympathetics
-sensation and taste to posterior 1/3 of tongue
- carotid sinus and carotid body baro- and chemo-receptors
-sensory from pharynx, middle ear, eustachian tube, tonsils

25

CN X exits the cranium via the _____

jugular foramen

26

Muscles of the larynx are supplied by what nerve?

Recurrent laryngeal
-branch of vagus

27

How is the vagus nerve tested?

1. say 'aaah' - look at uvula (points away from non-functioning side)
2. swallow water - watch larynx move
3. listen to speech - hoarseness?