Cranial cavity and contents

Question 1

sinuses are formed between the layers of which meningeal layer?

Answer 1

between the meningeal layer

2 layers - sinus - 2 layers

Question 2

name the unpaired dural venous sinuses

Answer 2

superior sagittal sinus
inferior sagittal sinus
straight sinus
intercavernous sinus
basilar sinus
occipital sinus

Question 3

name the paired dural venous sinuses

Answer 3

transverse sinus
sigmoid sinus
caverous sinus
superior petrosal sinus
superior petrosal sinus
inferior petrosal sinus
sphenoparietal sinus

Question 4

which venous components drain into the cavernous sinus

Answer 4

superior opthalmic vein
cerebral vein
sphenoparietal vein

Question 5

the cavernous sinus drains to what venous stuctures

Answer 5

superior and inferior petrosal sinuses

then to the pterygoid plexus

Question 6

where does the cavernous sinus lie

Answer 6

on either side of the body of the sphenoid bone (sella turcica)
on either side of the pituitary gland

Question 7

what components are contained within the cavernous sinus

Answer 7

internal carotid artery

abducens (CN6)

Question 8

what components are contained within the lateral dural wall of the cavernous sinus

Answer 8

oculomotor nerve (CN3)
trochlear nerve (CN4)
opthalmic division of trigeminal nerve (V1)
maxillary division of trigemnial (V2)

Question 9

CN1

Answer 9

olfactory

Question 10

CN2

Answer 10

optic

Question 11

CN3

Answer 11

occulomotor

Question 12

CN4

Answer 12

trochlear

Question 13

CN5

Answer 13

trigeminal

Question 14

CN6

Answer 14

abducens

Question 15

CN7

Answer 15

facial

Question 16

CN8

Answer 16

vestibulocochlear

Question 17

CN9

Answer 17

glossopharyngeal

Question 18

CN10

Answer 18

vagus

Question 19

CN11

Answer 19

accessory

Question 20

CN12

Answer 20

hypoglossal

Question 21

olfactory nerve ->

Answer 21

cribiform plate

Question 22

optic nerve –>

Answer 22

optic canal

with opthalmic artery

Question 23

oculomotor nerve –>

Answer 23

superior orbital fissure

Question 24

name the structures that pass through the superior orbital fissure

Answer 24

oculomotor nerve
trochlear nerve
lacrimal, frontal, and nasociliary branches of opthalmic nerve
abducens nerve
superior opthalmic vein

Question 25

trochlear nerve -->

Answer 25

superior orbital fissure

Question 26

opthalmic nerve (v1) -->

Answer 26

superior orbital fissure

Question 27

maxillary (v2) -->

Answer 27

foramen rotundum

Question 28

mandibular (V3) -->

Answer 28

foramen ovale

Question 29

abducens -->

Answer 29

superior orbital fissure

Question 30

facial nerve -->

Answer 30

internal acoustic meatus

Question 31

vestibulocochlear (CN8) -->

Answer 31

internal acoustic meatus

Question 32

glossopharyngeal (CN9) -->

Answer 32

jugular foramen

Question 33

vagus (CN10) -->

Answer 33

jugular foramen

Question 34

accessory (CN11) -->

Answer 34

jugular foramen

Question 35

hypoglossal (CN12) -->

Answer 35

hypoglossal canal

Question 36

what components pass through the jugular foramen

Answer 36

``` inferior petrosal sinus glossopharyngeal vagus accessory nerve sigmoid sinus posterior meningeal artery ```

Question 37

the middle meningeal artery passes through what structure in the skull

Answer 37

foramen spinosum | with the meningeal branch of the mandibular nerve

Question 38

what forms the basiliar artery

Answer 38

the joining of the right and left vertebral arteries

Question 39

what branches do the vertebral arteries give off before joining to form the basilar artery?

Answer 39

posterior inferior cerebellar artery (PICAs) posterior spinal arteries anterior spinal arteries

Question 40

what branches off the basilar artery?

Answer 40

pontine branches labyrinthine arteries anterior inferior cerebellar arteries (AICAs) superior cerebellar artery posterior cerebral artery (terminal branches)

Question 41

describe the progression of the internal carotid artery as it enters the cranial cavity

Answer 41

``` enters through the carotid canal passes through the cavernous sinus gives off the opthalmic artery branches into posterior communicating artery branches into anterior cerebral artery continues as the middle cerebral artery ```

Question 42

the anterior communicating artery allows for communication between what vessels

Answer 42

anterior cerebral arteries from the internal carotid

Question 43

the posterior communicating arteries allow for communication between what arteries

Answer 43

posterior cerebral and internal carotid

Question 44

what arteries make up the circle of willis

Answer 44

``` posterior cerebral arteries posterior communicating internal carotid anterior cerebral anterior communicating ```