Anatomy Exam 3- Cranial Fossa

Front 1

What seperates the cerebellum and the cranium?

Back 1

tentorium cerebelli

Front 2

What is housed in the anterior cranial fossa

Back 2

frontal lobes

Front 3

What is housed in the middle cranial fossa

Back 3

temporal lobes

Front 4

What is housed in the poserior cranial fossa

Back 4

cerebellum
brainstem

Front 5

What are the major part of the ethmoid bone?

Back 5

crista galli- bony projection that is an attachment site for dural reflection/septa between the hemispheres

cribiform plate- on either side of the crista galli- very perforated because olfactory bulb sits right on top of them

ant&post ethmoidal foramina- nerves and arteries run through this for communication between brain and olfactory

Front 6

What is the attachment for the tentorium (dural reflection)

Back 6

Anterior clinoid process

Front 7

What sits in the prechiasmatic sulcus?

Back 7

optic chiasm

Front 8

What sits in the hypophyseal fossa?

Back 8

pitituary gland

Front 9

What is housed inthe petrous crest

Back 9

the inner ear and the tentorium attaches here

Front 10

What bone is a part of all three cranial fossae?

Back 10

sphenoid bone

Front 11

What runs through the superior orbital fissure?

Back 11

On the lesser wing of the sphenoid

CN3, 4, Lacrimal, frontal and nasociliary braches of opthalmic nerve, abducens, and superior opthalmic vein

Front 12

What runs through the foramen rotundum

Back 12

Just posterior to the SOF

Maxillary Nerve V2

Front 13

What runs through the foramen ovale?

Back 13

Mandibular nerve V3
Accessory meningeal artery
Lesser petrosal nerve

Front 14

What runs through the foramen spinosum-

Back 14

Middle meningeal artery and vein
meningeal branch of mandibular nerve

Front 15

What runs through the optic canal?

Back 15

Optic nerve
Opthalmic artery

Front 16

What runs through the internal acoustic meatus?

Back 16

Facial nerve
Vestibulococlear nerve
Labyrinthine artery

Front 17

What runs through the jugular foramen?

Back 17

Inferior petrosal sinus
CN 9,10,11
Sigmoid sinus
posterior meningeal artery

Front 18

What runs through the hypoglossal canal?

Back 18

Hypoglossal nerve

Front 19

Emmissary veins run through..

Back 19

condylar canal
mastoid canal

Front 20

What travels through the foramen magnum?

Back 20

spinal cord/medulla
spinal roots of CN XI
meninges
vertebral arteries
ant. and post. spinal arteries

Front 21

What are the two layers of the dura?

Back 21

Periosteal- inner aspect of the skull
-venous sinuses in this layer

Meningeal layer- thicker portion

Front 22

Which part of the meninges contains CSF and BV

Back 22

subarachnoid space

Front 23

Dural reflection between cerebral hemispheres

Back 23

Falx cerebri

Attaches to bony crest on ethmoid bone

Front 24

Posterior dural reflection between posterior and middle cranial fossa

Back 24

Tentorium cerebelli

perpendicular to the falx cerebri

Front 25

Dural reflection between the cerebellar hemispheres

Back 25

Falx cerebelli

Front 26

Point at which all the the dural reflection intersect

Back 26

Confluence of the sinuses

Front 27

What runs through the cavernous sinus?

Back 27

carotid aretery (twice)
oculomotor nerve
trochlear nerve
abducens nerve
V1- opthalmic

Front 28

Intraparenchymal hemorrhage

Back 28

stroke

Front 29

Pterion

Back 29

the area where four bones come together

the middle meningeal artery runs underneith

Front 30

Extradural hematoma

Back 30

severing of the middle meningeal artery from skull fracture

slow progressing and decomposition

Front 31

Artery involved in a subarachnoid hemorrhage

Back 31

cerebral artery in the subarachnoid space