when does the Fontanelle close?
Ant. Fossa Borders and Contents?
-Ant- Frontal bone [forms the roof of the Orbit]
-projection of the Ethmoid Bone in the center of the Ant. Fossa: Crista Galli
- point of attachment for the Faux Cerebrae
-Posteriorly, attaches to the Post. Protuberance
*the Dura Mater reflection that divides the head into R. and L. hemispheres?
foramen on both sides of the Crista Galli?
border b/w the Ant. and Middle Fossa?
Lesser Wing of the Sphenoid Bone
Imp. Gland in the Middle Fossa?
border b/w the Middle and Post. Fossa
Petrous Ridge of Temporal Bone
what do the Diploic Veins [extra-cranial veins] drain? drain into?
-the Frontal, Parietal, Occipital Bones themselves
the 4 Dural Sinuses?
1 Frontal, 2 Temporal, 1 Occipital
Frontal Dural Sinus drains into?
Superior Sagittal Sinus
Ant. Temporal Dural Sinus drains into?
spheno-parietal sinus --> drains into Cavernous Sinus
Post. Temporal Dural Sinus drains into?
goes to Transverse Sinus
Occipital Dural Sinus drains into?
where is Superior Sagittal Sinus found?
found on the roof of the Faux Cerebrae
*All the sinuses end up into?
2 layers of the Dura Mater?
2) Periosteal (inner layer)
name of the Dura Mater reflection that separates the Posterior Fossa [Occipital Lobe; or Tetrosal part] from the Cerebellar Fossa?
name of the Dura Mater [from the Periosteum] reflection that divides the Cerebellar Fossa into a R. and L. one?
what Dura Mater reflection separates the Pituitary Gland from the rest of the structures of the Cranial cavity?
which Dural Sinus can carry infections from the Abdomen or Thorax up to the brain?
what CN likely to be infected when there is fl. or compression to the Cavernous Sinus?
III, IV, VI [most likely]
[and V1 and V2]
-Internal Carotid too
what structures can be affected if there is infection of the Cavernous Sinus?
* 4 arteries that make up the Cerebral Circle of WIllis?
1) Ant. Communicating
2) Ant. Cerebral
3) Post. Communicating
4) Post. Cerebral
Innervation of the Supra-Tentorium Dura Mater?
Innervation of the Infra-Tentorium Dura Mater?
*compression of the Post. Cerebral A can affect which N?
*compression of the Ant. Cerebral A can affect which N?