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MD4001 Anatomy > blood supply to the brain > Flashcards

Flashcards in blood supply to the brain Deck (28)
1

what four arteries supply the brain

two internal carotid arteries anteriorly
two vertebral arteries posteriorly

2

what is the vertebral artery a branch of

the first part of the subclavian artery

3

what does the vertebral artery ascend through

foramina in the transverse processes (upper six cervical vertebra)

4

what do the vertebral arteries enter through

foramen magnum and pierces the meninges to enter the subarachnoid space

5

where does the vertebral artery become the basilar artery

at the lower border of the ventral pons it joins the vessel on the opposite side

6

where does the basilar artery ascend

on the anterior surface of the pons

7

where does the basilar artery terminate

divides into two posterior cerebral arteries

8

what is the blood supply to the cerebellum and brainstem

superior cerebellar artery
anterior inferior cerebellar artery
posterior inferior cerebellar artery

(SCA, AICA, PICA)

9

where does the internal carotid artery pass into the skull

through the carotid canal in the temporal bone
passes through the cavernous sinus,
perforates the dura mater at the anterior clinoid process and enters the subarachnoid space

10

what does the internal carotid artery divide into

anterior and middle cerebral arteries

11

what are the 7 radiological segments of the carotid artery

C1- cervical segment
c2- petrous segment
c3- lacerum segment
c4- cavernous segment
c5- clinoid segment
c6- opthalmic segment
c7- communicating segment

12

what is the circle of willis

anastomising system of arteries at the base of the brain

13

what is the circle of willis closely related to

cerebral peduncles
optic chiasma
pituritary stalk
occulomotor nerves

14

what does the anterior cerebral artery supply

structures near the midline (continues to corpus callosum and back towards parietal lobe

15

what course does the middle cerebral artery take

passes laterally through the lateral fissure emerges onto the lateral surface of the cerebral hemispheres

16

what are the symptoms of a middle cerebral artery stroke

contralateral hemiplegia (one sided paralysis)
hemi sensory loss
contralateral hemianopia
dysphasia
anosognosia (lack of perception)

17

what are the symptoms of anterior cerebral artery stroke

weak contralateral leg and arm
sensory loss in contralateral foot and leg
gait apraxia
akinetic mutism
urinary incontinence

18

what are the symptoms of a posterior cerebral artery stroke

contralateral homonymous hemianopia

19

what is the blood supply of the basal ganglia and internal capsule

medial striate branch of ACA
lateral striate branches of MCA
anterior choroidal

20

what is the blood supply of the thalamus and midbrain

branches of PCA

21

what is the blood supply of the pons

basilar, superior cerebellar
anterior inferior cerebellar

22

what is the blood supply of the medulla

vertebral/ anterior spinal, inferior cerebellar/ basillar

23

what cranial nerves are found in the midbrain

3 and 4

24

what cranial nerves are found in the pons

5,6,7,8

25

what cranial nerves are found in the medulla

9-12

26

what type of haemorrhage can a berry aneurism cause

subarachnoid

often Posterior communicating artery

27

what are the components of the blood brain barrier

endothelial cell
tight juntion
basement membrane astrocyte foot processes

28

what is the limit for tranport accross the BBB

400 Da