Anatomy: Cranial Cavity And Cranial Nerves

Front 1

What are the 3 cranial fossa

Back 1

anterior, middle, and posterior cranial fossae

Front 2

What lies in the anterior cranial fossa?

Back 2

frontal lobes of cerebrum

Front 3

What lies in the middle cranial fossa?

Back 3

temporal lobes of cerebrum

Front 4

What lies in the posterior cranial fossa?

Back 4

cerebellum

Front 5

Anterior cranial fossa composed of which bones?

Back 5

orbital plates of frontal b., cribriform plate of ethmoid, and lesser wings of sphenoid

Front 6

Middle cranial fossa composed of which bones?

Back 6

greater winds and sella surcica of the sphenoid, petrous and squamous part of temporal bones.

Front 7

Posterior cranial fossa composed of which bones?

Back 7

occipital bone and petrous part of temporal bone

Front 8

structure in center of cribriform plate?

Back 8

crista galli

Front 9

dura mater has folds called what?

Back 9

dural reflections

Front 10

dura mater innervation

Back 10

sensory branches of CN V1, V2, and V3

Front 11

dura mater blood supply

Back 11

middle meningeal a. (branch of maxillary a.)

Front 12

2 layers of dura mater:

Back 12

meningeal layer and periosteal layer

Front 13

formed between meningeal and periosteal layers of dura mater

Back 13

dural venous sinuses

Front 14

dura reflects to form these threepartitions

Back 14

falx cerebri (separates cerebral hemispheres) and tentorium cerebelli (separates cerebrum from cerebellum), falx cerebelli (separates 2 cerebellar hemispheres)

Front 15

formed by the anterior border of the tentorium

Back 15

tentorial notch

Front 16

CSF drains into dural venous sinuses via structures called:

Back 16

the arachnoid granulations

Front 17

blood from intracranial dural venous sinuses drains into

Back 17

internal jugular vein

Front 18

intracranial dural venous sinuses interconnect with veins on the exterior of the skull via what veins?

Back 18

emissary veins and connections to the facial vein via the superior and inferior ophthalmic veins

Front 19

located in the superior margin of the falx cerebri

Back 19

superior sagittal sinus

Front 20

located in the inferior margin of the falx cerebri

Back 20

inferior sagittal sinus

Front 21

inferior sagittal sinus connects with what?

Back 21

straight sinus

Front 22

sinuses located on the lateral sides of the sella turcica

Back 22

cavernous sinuses--interconnect with ophthalmic veins (through superior orbital fissure) and superior, inferior, and basilar sinuses, and pterygoid venous plexus

Front 23

extends laterally from confluens of sinuses

Back 23

transverse sinuses

Front 24

confluens of sinuses junction of which sinuses?

Back 24

straight sinus, occipital sinus, superior sagittal sinus, and transverse sinuses

Front 25

confluens of sinuses corresponds with what structure of the occipital bone?

Back 25

internal occipital protuberance

Front 26

sinus located in the intersection of the falx cerebri and tenntorium cerebelli.

Back 26

straight sinus

Front 27

straight sinus interconnects

Back 27

inferior sagittal sinus with confluens of sinuses

Front 28

transfer CSF to venous system

Back 28

arachnoid granulations

Front 29

interconnects cavernous sinus, and transverse sinus

Back 29

superior petrosal sinus

Front 30

interconnects cavernous sinus, inferior petrosal sinus, and internal vertebral venous plexus

Back 30

basilar sinus

Front 31

interconnects cavernous and basilar sinuses with the internal jugular vein

Back 31

inferior petrosal sinus

Front 32

These two sinuses connect with the internal vertebral venous plexus

Back 32

occipital sinus and basilar sinus

Front 33

Name of CN I

Back 33

olfactory n.

Front 34

Name of CN II

Back 34

optic n.

Front 35

Name of CN III

Back 35

oculomotor n.

Front 36

Name of CN IV

Back 36

trochlear n.

Front 37

Name of CN V

Back 37

trigeminal nerve

Front 38

Name of CN VI

Back 38

abducens n.

Front 39

Name of CN VII

Back 39

facial n.

Front 40

Name of CN VIII

Back 40

vestibulo-cochlear n.

Front 41

Name of CN IX

Back 41

Glossopharyngeal n.

Front 42

Name of CN X

Back 42

vagus n.

Front 43

Name of CN XI

Back 43

accessory n.

Front 44

Name of CN XII

Back 44

hypoglossal n.

Front 45

Exit of CN I

Back 45

foramina of the cribriform plate

Front 46

Exit of CN II

Back 46

optic canal

Front 47

Exit of CN III

Back 47

superior orbital fissure

Front 48

Exit of CN IV

Back 48

superior orbital fissure

Front 49

Exit of CN V

Back 49

V1: superior orbital fissure
V2 foramen rotundum
V3 foramen ovale

Front 50

Exit of CN VI

Back 50

superior orbital fissure

Front 51

Exit of CN VII

Back 51

exits cranial cavity through internal auditory meatus

exits skull through stylomastoid foramen

Front 52

Exit of CN VIII

Back 52

exits cranial cavity through internal auditory meatus

Front 53

Exit of CN IX

Back 53

jugular foramen

Front 54

Exit of CN X

Back 54

jugular foramen

Front 55

Exit of CN XI

Back 55

jugular foramen

Front 56

Exit of CN XII

Back 56

hypoglossal canal