The challenge of the skull

Hypotension and cerebral perfusion

Elevated cerebral pressure

Normal cerebral autoregulation

Hypertension and autoregulation

Cerebral blood supply

Cerebral vessels in situ

Third nerve sandwich

Blood supply to the medulla

Blood supply to the pons

Blood supply to the midbrain

Blood supply to cerebral convexity

Blood supply to cerebral ventrum

Blood supply to cerebral midline

Cranial meninges

Cranial bleeds

Dural folds

Venous sinuses

Blood-brain and blood-cerebrospinal barriers

fMo: foramen of Monro (n=2)fL: foramen of Luschka (n=2)fMa: foramen of Magendie (n=1)

Cerebrospinal fluid flow within the ventricular spaces

Cerebrospinal fluid flow within the subarachnoid space

Cerebral veins and sinuses

Bridging veinsA

B

Spinal meninges

A

B