lab 2 cerebrovasculature

Question 1

posterior circulation is taken care of by which system?

Answer 1

vertebral basilar system

Question 2

vertebral basilar system comprises:

Answer 2

vertebral, anterior spinal, posterior inferior cerebellar, anterior inferior cerebellar, and superior cerebellar arteries (VAsPiAiS)

Question 3

how do the vertebral arteries enter the cranium

Answer 3

THE BIG HOLE (foramen magnum) where spinal cord and medulla pass through

Question 4

the internal carotoid system is responsible for

Answer 4

anterior circulation

Question 5

vertebral arteries are closest to which brain structure?

Answer 5

medulla

Question 6

the anterior spinal arteries carry blood to

Answer 6

the spinal cord

Question 7

the posterior inferior cerebellar arteries carry blood to (PICA)

Answer 7

to dorsolateral medulla, choroid plexus(4th ventricle) posterior/inferior cerebellum

Question 8

The anterior spinal arteries join the PICA and the vetrebral arteries to make the

Answer 8

Basilar artery

Question 9

The AICA supplies blood to the

Answer 9

upper medulla/lower pons and inferior cerebellum

Question 10

blood to the superior cerebellum and upper pons comes from the

Answer 10

superior cerebellar arteries

Question 11

posterior cerebral arteries give blood to

Answer 11

medial/inferior temporal lobes; occipital lobes; thalamus)

Question 12

what is an aneurysm

Answer 12

weakening of muscles surrounding arteries. (stress increases blood pressure, which rubs against the thin portions of the wall. Outward swelling may rupture.

Question 13

the most common type of aneurysm is:

Answer 13

Saccular aneurysm. a budding at the y of artery intersections. Caused by subarachnoid hemmorhages , found using MRI/CT scans

Question 14

what is a thrombus

Answer 14

a blood clot

Question 15

what is the difference between a hemorrhagic stroke and an ischemic stroke?

Answer 15

hemorrhagic: caused by a tear in an artery (bleeding)
ischemic: caused by a block in an artery

Question 16

embolism is:

Answer 16

dislodged blood clot that travels thru vessels to get lodged in an artery

Question 17

anastomoses are

Answer 17

cross connections of adjacent blodd vessels; causes overlap in vascular territories

Question 18

the middle cerebral arteries provide blood to :

Answer 18

lateral parts of ctx; parietal and temporal lobes

Question 19

the posterior cerebral arteries provide blood to:

Answer 19

midbrain/thalamus, parts of temporal lobe

Question 20

the PICA gives blood to

Answer 20

the inf occipital and if cerebellum

Question 21

Superior cerebellar arteries give blood to

Answer 21

superioir/tentorial parts of cerebellum

Question 22

anterior cerebral artery gives blood to

Answer 22

medial parts of frontal/parietal lobes, BG, internal capsule, CC

Question 23

which artery runs along the corpus callosum (visible from a midsaggital cut)

Answer 23

anterior cerebral a

Question 24

the internal carotids are known as what outside of the circle of willis

Answer 24

middle cerebral aa

Question 25

the most common type of anneurism is:

Answer 25

saccular; it is found in the y's of arteries and when it ruptures causes subarachnoid hemmorhages. MRI's and CT's are the best way to diagnose.

Question 26

`the largest arteries in the brain which are most affected by heart clots are:

Answer 26

middle cerebral arteries

Question 27

the lateral surfaces of the brain are mostly supplied by

Answer 27

middle cerebral arteries

Question 28

the medial surfaces of the brain are mostly supplied by

Answer 28

the anterior cerebral arteries