Head Flashcards
Foramen caecum site and transmits
Frontal, most anterior foramen
Has emissary vein to superior sagittal sinus
Optic canal contents
Optic n
Ophthalmic A
Superior orbital fissure contents
CN3
CN4
Lacrimal, frontal, nasociliary branch CNV1
CN6
Sup opthalmic V
Foramen rotundum transmits
CNV2
Foramen ovale transmits
CNV3
Accessory meningeal A
Lesser petrosal N (occasionally)
Foramen spinosum transmits
Middle meningeal A+V
Meningeal branch of mandibular nerve
Jugular foramen transmits
Inferior petrosal sinus
Glossopharyngeal N
Vagus N
Accessory N
Sigmoid sinus
Posterior meningeal A
Foramen magnum transmits
Medulla oblongata
Meninges
Vertebral A
Meningeal branches of vertebral A
Spinal roots of accessory nerves
Space b/w arachnoid and duramater
Subdural space
Where are the arachnoid ville
Herniate into dura mater
What are the cisterns of the brain
Cerebellomedullary cistern
Pontine cistern
Interpenducular cistern
Chiasmatic cistern
What is the point of a cistern
For pooling CSF
What produces CSF & where
Choroid plexus, lateral, 3rd, 4th ventricle
How much production of CSF/day
500ml
What are the parts of lateral ventricle
Body, anterior, posterior and inferior horns
Flow of CSF
Choroid plexus => ant horn of lateral ventricle => interventricular foramen => 3rd ventricle => cerebral aqueduct => 4th ventricle
How does CSF exit the flow
Via lateral aperature or median
What are the folds of the inner layer of dura that project into the cranial cavity
Tentorium cerebelloi
Falx cerebri
Falx cerebella
Diaphragma sellae
What does the tentorium cerebelli separate
Superior petrosal & transverse sinuses, roofs the posterior cranial fossa
What are the attachments of tentorium cerebelli
Posterior clinoid process
Upper border of petrous temporal bone
Inner surface of each side of the skull to internal occipital protuberance
What does the falx cerebri separate
2 hemispheres
What are the attachments of falx cerebri
Crista galli of ethmoid bone
Upper surface of tentoium
Falx cerebella extends from
Internal occipital protuberance to post margin of foramen magnum
Blood supply to anterior cranial cavity
Anterior meningeal branch of ant ethmoidal A
Post ethmoidal A