Cranial Fossae and Cranial Nerves Flashcards Preview

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Flashcards in Cranial Fossae and Cranial Nerves Deck (46)
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1

What goes through the carotid canal?

Internal carotid artery

2

What goes through the foramen spinosum?

Middle meningeal artery

3

What is an outgrowth of the telencephalon?

CN I olfactory

4

Where does the olfactory mucosa go through?

Cribriform plate to synapse in olfactory bulb

5

Where do the olfactory tracts go to?

Prepiriform area of amygdala (primary olfactory cortex)

6

What is the only sensory system that is not relayed through thalamus?

CN I olfactory

7

What is an extension of the diencephalon?

CN II Optic

8

Where is the CN II optic from?

The retina through the optic canal, forms chiasm then optic tracts

9

What runs in the lateral wall of cavernous dural venous sinus?

CN III Oculomotor, CN IV Trochlear

10

Wha goes through the annular ring?

CN III Oculomotor and CN VI Abducent

11

Where is the CN III Oculomotor?

Midbrain through superior orbital fissure to orbit

12

What kind of motor control is there in the CN III Oculomotor?

Somatic and parasympatheitc

13

Somatic motor control is to?

Inferior oblique, superior rectus, inferior rectus and medial rectus, levator palpabrae

14

Parasympathetic control is to?

Sphincter papillae and ciliary muscle

15

What is the superior division of oculomotor?

Leavtor palpabrae and superior rectus

16

Where is the CN IV Trochlear?

Midbrain through superior orbital fissure to orbit

17

Is the CN IV Trochlear o the inside or outside of the annular ring?

Outside

18

What is the only cranial nerve which all fibres cross to the opposite side?

CN IV Trochlear

19

Where does the motor fibres of the CN IV Trochlear go to?

Superior Oblique

20

Where does the CN V Trigeminal nerve originate from?

The pons, forms a ganglion and divides into 3 divisions

21

What are the 3 divisions of the Trigeminal nerve?

Ophthalmic
Maxillary
Mandibular

22

What kind of innervation does the CN V Trigeminal give?

Motor and Sensory

23

What does the Lacrimal, Zygomatic, Lingual and Auriculotemporal allow?

Passage of parasympathetic fibres from other cranial nerves

24

Where does the CN IV Abducent nerve originate from?

The pons and passes through the superior orbital fissure to reach the orbit

25

What is the long extradural pathway?

CN VI Abducent

26

Where does the CN IV Abducent pass through?

Cavernous dural venous sinus with internal carotid artery

27

Where does the CN VII Facial nerve originate from?

The pons, through internal acoustic meatus into temporal bone

28

What is involved in the CN VII Facial nerve?

Greater petrosal, stapedial and chorda tympani

29

Where does the motor fibres of the CN VII leave?

Stylomastoid foramen

30

Where does the vestibule apparatus and auditory apparatus go through?

Internal auditory meatus to pons/medulla oblongata