Cranial Fossae and the Suboccipital Region Flashcards
Anterior cranial fossa contains…
frontal lobes of cerebral hemispheres
Middle cranial fossa contains…
temporal lobes of cerebral hemispheres
Posterior cranial fossa contains…
occipital lobes of cerebral hemispheres
Leptomeninges is the combination of…
pia and arachnoid mater
Arteries of the dura…
meningeal arteries
middle meningeal artery off the maxillary artery
Where does the middle meningeal artery enter?
foramen spinosum
Pterion is a …
weak spot on the lateral skull where 4 bones meet
Nerves of meninges
CN V trigeminal
The arachnoid, pia and brain are … to pain.
insensitive
Venous sinuses of the Dura
superior sagittal sinus inferior sagittal sinus straight sinus transverse sinuses sigmoid sinuses occipital sinus
Hypertrophy of the arachnoid villi results in … which may form pits on the inner table of cranial bones along superior sagittal sinus.
arachnoid granulations
Cavernous sinuses are connected by … and receive blood from …
intercavernous
superior and inferior ophthalmic veins, superficial middle cerebral and sphenoparietal sinus
The cavernous sinuses are drained by..
superior and inferior petrosal sinuses
Cavernous sinus surrounds ..
abducens CN VI
Within the lateral wall of the cavernous sinus runs CN …
III oculomotor
IV trochlear
V1 ophthalmic
V2 maxillary
CSF is produced in the … within the …
choroid plexuses
lateral, third and fourth ventricles
Most of the CSF is produced in the … and passes through the …. into the …. down the … into the … and out the…
lateral ventricles interventricular foramina third ventricle cerebral aqueduct fourth ventricle median aperture
CSF is mainly absorbed back into the venous blood through …
arachnoid villi
All brain blood comes from two pairs of arteries…
internal and vertebral arteries
Ophthalmic arteries supply ..
eye, orbit and forehead
Anterior cerebral arteries supply..
frontal lobes
Middle cerebral arteries supply..
temporal lobes
Superficial intrinsic muscles of the posterior neck region…
splenius capitis
splenius cervicis
Intermediate intrinsic muscles of posterior neck..
longissimus capitis
longissimus cervicis
Deep intrinsic muscles of suboccipital region..
semispinalis capitis muscles
4 muscles deep to semispinalis capitis
rectus capitis posterior minor and major
obliquus capitis superior and inferior
Suboccipital triangle formed by..and contains
rectus capitis major, obliquus capitis inferior and obliqques capitis superior
vertebral artery and suboccipital nerve
Hyperextension in whiplash can cause ..
anterior longitudinal ligament to be stretched and/or torn
Severe hyperextension of the neck in whiplash can
rupture discs and break the posterior arch of the atlas
