Blood Supply, Meninges, Fluid Filled Spaces and Cerebrospinal Fluid Flashcards
Medial striate artery
Branch of ant cerebral a
Supplies ant int capsule
Anteromedial group
O-Ant cerebral and communicating arteries
Supply- Ant hypothalamus and preoptic area
Anterolateral group
O-Middle cerebral a
S-Head of caudate nucleus, putamen, lat part of palidum and int capsule, ext capsule, claustrum
Posteromedial group
O-Post cerebral and communicating a
S-Thalamus(ant + med)
Posterolateral group
O-Post cerebral a
S-Thalamus (post)
Which arteries supply the cerebellum?
Post inf cerebellar a
Ant inf cerebellar a
Sup cerebellar a
Which arteries supply the brainstem?
Branches from basilar a
Post cerebral a
Which arteries supply the pons?
Pontine arteries
Which arteries supply the medulla?
Branches from ant inf cerebellar a and post inf cerebellar a
Which arteries supply the choroidal plexus (3rd ventricle)?
Ant and 2 post choriodal aa.
Which arteries supply the choroidal plexus (4th ventricle)?
Branches from ant inf cerebellar a and post inf cerebellar a
Which space do superficial veins run in?
Subarachnoid
Which fissure does the great cerebral vein and terminal part of internal cerebral vein travel in?
Transverse fissure
Where does the straight sinus run?
Between the cerebellum and great occipital lobe
Dura mater
Outer tough layer of CT
Arachnoid mater
Thin layer
Thin wispy cords of CT connect to pia
Pia mater
Very thin
Accompanies arteries penetrating into the brain
What are the meninges?
Dura, arachnoid and pia mater
What does CSF stand for?
Cerebro-spinal fluid
CSF
Secreted by specialised cells within ventricular system (500ml a day)
Circulates around brain and SC from 4 ventricles to subarchnoid space
Reabsorbed into dual venous system by arachnoid granulations
Cushions the brain, but internally and externally
What allows CSF to be reabsorbed?
Arachnoid granulations
What produces CSF
Choroid plexus
What are cisterns?
Arachnoid departs from pia leaving large space filled with CSF