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Flashcards in Anatomy - Blood Supply Deck (48)
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1

what supplies the medial and superior surface of frontal and parietal lobes

anterior cerebral a. 

2

what supplies the lateral surface of frontal and parietal lobes and the superior part of temporal lobe

middle cerebral a.

3

what supplies the occipital lobe and inferior temporal lobe

posterior cerebral a.

4

how do "watershed infarcts" occur

brain ischemia that is localized to the vulnerable border zones between the tissues supplied by the anterior, posterior and middle cerebral arteries

- border zones are susceptible to damage under conditions of sudden systemic hypotension or hypoperfusion

5

what supplies the pyramids

anterior spinal artery

6

what supplies the hypoglossal nucleus

anterior spinal artery

7

what supplies the medial leminscus (ML)

anterior spinal artery

8

what supplies the lateral medulla

PICA

9

what supplies the medial aspect of the pons

paramedian branches of basilar a.

10

what supplies the lateral aspect of pons

long circumfrential branches of basilar a.

and

branches of AICA

11

what supplies the medial portion of the midbrain

anteromedial branches of basilar bifurcation

and

P1 segment

12

what supplies the medial medulla

anterior spinal a.

13

what supplies the cochlear nucleus

AICA

14

what supplies the fasciculus cuneatus, fasciculus gracilis, cuneate nuclei, and gracile nuclei

posterior spinal artery

15

what supplies the inferior and superior colliculus in the midbrain

quadrigeminal artery and P3 segments

16

what supplies the thalamus and medial and lateral geniculate bodies

thalamogeniculate branhces of PCA

17

what supplies the optic tract, hypocampal formation, and part of the internal capsule

anterior choroidal artery

18

what supplies the internal capsule

lenticulostriate arteries

and

anteiror choroidal a. 

19

common site for epidural hematomas

pterion or squamous temporal bone

20

sx and tx of epidural hematoma

sx: momentary unconsciousness followed by lucid period of hours to 1-2 days then unconsciousness

tx: surgical

21

what is the source of a subdural hematoma

venous

- usually cortical veins opening into the superior sagittal sinus

22

what is the source of an epidural hematoma

MMA

23

sx and tx of subdural hematoma

sx: slower accumulation of blood due to pressure and often self-limiting

tx: surgical

24

what type of bleed is this

epidural hematoma

25

what type of bleed is this

subdural hematoma

26

what is the source of bleeding in a subarachnoid hemorrhage

anterior cerebral a.

27

sx of a subarachnoid hemorrahge

massive bleeding into CSF compartment due to arterial source

- worst headache of patient's life

- deteriorating level of consciousness

28

what type of bleed is this

subarachnoid hemorrhage

29

what is an intracerebral (subpial) hemorrhage

bleeding within brain substance (stroke)

30

what is the source of an intracerebral hemorrhage

usually middle cerebral a.