Part5: Blood Supply

Front 1

TOTAL blood supply to brain occurs via

Back 1

1 internal carotid
2 vertebral arteries

Front 2

branches of internal carotid

Back 2

1 middle cerebral a (MCA)
2 anterior cerebral a (ACA)
3 posterior communicating a (PCA)
4 ophthalmic a
5 choroidal a

Front 3

astrocyte

Back 3

cells that make contact with blood vessels and allow something to pass into brain and

Front 4

MCA supply

Back 4

- lateral surface
- deep structure of each hemisphere

Front 5

ACA supply

Back 5

medial surface of cerebral cortex (anterior and superior)

Front 6

PCA connect with

Back 6

connect MCA and ACA with posterior cerebral artery

Front 7

ophthalmic a supply

Back 7

eye, orbital structure, frontal area of scalp and sinuses

Front 8

choroidal a supply

Back 8

choroid plexus of lateral ventricles

Front 9

what type of artery associated with migraine

Back 9

external carotid artery

Front 10

branches of vertebral artery

Back 10

- posterior inferior cerebellar a (PICA) - largest
- meningeal a.
- posterior spinal a.
- anterior spinal a.

Front 11

vertebral artery branch of from

Back 11

subclavian artery

Front 12

PICA supple

Back 12

central and posterior cerebellum and part of medulla

Front 13

meningeal a

Back 13

supply bone and dura mater(easily damage from head injury)

Front 14

posterior spinal a

Back 14

supply posterior spinal cord

Front 15

anterior spinal a

Back 15

supply anterior spinal cord

Front 16

branch basilar artery

Back 16

1 pontine a
2 labyrinthe a
3. anterior inferior cerebellar (AICA)
4 superior cerebellar
5 posterior cerebral

Front 17

pontine a

Back 17

supply pons

Front 18

labyrinthine a

Back 18

supply inner ear

Front 19

AICA

Back 19

supply anterior and inferior cerebellum

Front 20

superior cerebellar a

Back 20

supply superior surface of crebellum

Front 21

posterior cerebral a

Back 21

supply inferior and medial tempral and occipital lobes, striatum , thalamus, midbrain

Front 22

circle of willis component

Back 22

* Anterior cerebral artery (left and right)
* Anterior communicating artery
* Internal carotid artery (left and right)
* Posterior cerebral artery (left and right)
* Posterior communicating artery (left and right)
- basilar arteries

Front 23

circle of willis communicate via

Back 23

anastomoses (arterialjunction) of two internal carotid a. , basiar a., and their branches

Front 24

importance of circle of willis

Back 24

allow blood that enter by with internal carotid or vertebral a. to be distributed to any part of both cerebral h.
(when occlideoccur on one side, bloodmay pass to opp. side to compensate)

Front 25

most common site of aneurysms (dilatation of a blood vessel)

Back 25

anastomoses on circle of willis

Front 26

function of veins and venous sinus

Back 26

return blood from brain to jugular vien -->heart

Front 27

SINUS

Back 27

- superior sagittal sinus
- inferior sagittal sinus
-straight sinus
- transverse sinus
- cavernous sinus

Front 28

VEIN

Back 28

external cerebral veins
great cerebral vein

Front 29

external cerebral veins

Back 29

- drain lateral surafce of brain
- empty into superior sagittal and cavernous sinuses

Front 30

great cerebral vein

Back 30

- drain smaller internal ceins
- empty into straight sinuses

Front 31

acute disruption of normal blood circulation in brain

Back 31

stroke or cerebrovascular accident (CVA)

Front 32

types of CVA involve

Back 32

1 hemorrphage (bleeding) 2 obstruction of artery

Front 33

location of intracranial hemorrphage

Back 33

- subdural
0 subarachnoid
- extradural

Front 34

cause of subdural hemorrphafw

Back 34

tearing of superior cerebral veins at the point of entrance into superior sagittal sinus ( cause by bloe to front/back of heard)

Front 35

cause of subarachnoid hemorrphage

Back 35

leakage of congenital aneurysm

Front 36

most dangerous hemorrphage

Back 36

subarachnoid hemorrphage

Front 37

cause of extradural hemoorphage

Back 37

skull fracture causing tearing of meningeal a. and viens ..most often middle meningeal a.**

minor blow to side of head which fractur parietal bone and severe artery

Front 38

cerebral hemorrphae due to

Back 38

rupture of branch MCA (middle cerebral a.)

Front 39

result of cerebral hemorrphage

Back 39

involve internal capsule, produce ontralateral hemiplegia and loos of consciousness

Front 40

cereal ischemia

Back 40

arterial occlusion usually by embolism (forign object - air, blood, clot, fat) in circulatory system outside of brain

Front 41

thrombosis

Back 41

arterial obstruction by blood clot ,involve vessles leafing to or inside brain

Front 42

cerebral ischmiacause arrest of cerebral blood flow and follow by

Back 42

1 neuronal dunction ceases after about 1 min, irreversible changes after 4 mins
2. hearing loss due to lack of bloodflow

Front 43

most common cause of global cerebral ischemia

Back 43

cardiac arret fur to coronary thrombosis

Front 44

progressive cerebral ischemia is due to

Back 44

narrow of arteries or tmor expansion

Front 45

loval dilation of vessel result from weaking of arterial wall

Back 45

cerebral aneurysm

Front 46

cerebral aneyrysm effecrt

Back 46

1 press on neighboring structure (cranial nerve)
2 sudden rupture of aneurysm dill subarachnois --> pain and mental confusion/ death

Front 47

progressive harding / thickening of arterial waa

Back 47

arteriosclerosis

Front 48

stage of arterioscleosis characterize by fatty dengeration of arterial walls m risk of hemorrphae

Back 48

atherosclerosis