Neuro Blood Supply

Front 1

Basilar aa location

Back 1

- ventral to pons

Front 2

Anterior spinal aa

Back 2

Ant 2/3 Spinal Cord
Lower Brainstem; Medulla
- pyramids
- ML
- roots to CN XII

Front 3

Internal Carotid System
- branches

Back 3

- opthalmic aa.
- Posterior communicating aa.
- anterior choroidal aa
- anterior cerebral aa.
- middle cerebral aa.

Front 4

opthalmic aa

Back 4

- opthalmic aa. (enters orbit with CN II and branches to central aa. of retina)
- causes blindness

Front 5

- Posterior communicating aa.

Back 5

- supplies hypothalamus & ventral thalamus
- 2nd most common site for aneurysm and causes IIIN palsy

Front 6

Anterior Choroidal aa

Back 6

- LGN
- globus pallidus
- posteior limb of internal capsule

Front 7

Anterior Cerebral aa

Back 7

- medial surface of hemisphere from frontal pole to parieto-occipital sulcus
1. paracentral lobule (leg-foot motor and sensory)
2. Most common aneurysm of circle of willis causing a bitemporal lower quadrantanopia
3. Medial striate aa. are the penetrating aa and supply anterior putamen and caudate nucleus and anteriorinferior internal capsule

Front 8

Middle cerebral aa.

Back 8

1. lateral convexity of the hemisphere
a. broca's and wernickes areas
b. face, arm motor and sensory
c. frontal eye field (in prefrontal cortex for attention and movements)
2. Lateral Striate aa.
- internal capsule, caudate nucleus, putamen and globus pallidus

Front 9

Territories of the cerebral aa.

Back 9

Front 10

BS to brain

Back 10

Front 11

Vertibrobasilar System

Back 11

- vertebral aa
- basilar aa

Front 12

Vertebral aa.

Back 12

- branch of subclavian
- branches to anterior spinal aa and PICA, dorsolateral quadrant of the medulla (NA, CN IX, X, XI) and inferior surface of cerebellum

Front 13

Basilar aa.

Back 13

- formed by 2 vertebral aa.
1. paramedian branches of the pontine aa, base of the pons (corticospinal and VI fibres)
2. Labyrinthine aa 15% from basillar 85% of people from the AICA
3. AICA: supplies caudal lateral potine tegmentunm, CN VII, spinal trigeminal tract and inferior curface of cerebellum
4. Superior cerebellar aa; dorsolateral tegmentum of rostral pons, superior cerebellar peduncle, superior surface of the cerebellum and cerebellar nuclei and the cochlear nuclei
5. Posterior cerebral artery connected to carotid via posterior communicating aa. Major BS to midbrain, thalamus, lateral and medial geniculate bodies and occipital lobe
- occlusion of PCA = contralateral hemianopia with macular sparing

Front 14

BS of the internal Capsule

Back 14

- mainly lateral striate aa of MCA and anterior choroidal aa

Front 15

Veins of the Brain

Back 15

1. superior cerebral (bridging) veins; drain the superior sagittal sinus.
2. Great Cerebral Vein of Galen drains deep cerebral veins into the straight sinus

Front 16

Venous Dural Sinuses

Back 16

1. superior sagittal sinus recieves from bridging veins and arachnoid villi
2. Cavernous sinus

Front 17

Venous Sinuses

Back 17

- confluence of the sinuses
- transverse sinus
- straight sinus

Front 18

Middle Meningeal aa

Back 18

branch off maxillary aa
- enters through foramen spinosum
- supplies most of the dura

Front 19

Carotid and vertebral Angiograms

Back 19