Cerebral Arteries Flashcards

(29 cards)

0
Q

Any supply

A

Mostly any frontal lobe and corpus callousness

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1
Q

Two anterior Cerebral arteries ( l ACA and R ACA) supplies by

A

The internal Carotids

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2
Q

Location it ACA

A

Swoops posteriorly towards parieto-temporal-occipital area

Mohawk

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3
Q

Two middle cerebral arteries (L MCA and r MCA ) supplied by

A

The internal Carotids

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4
Q

MCA SUPPLY

A

Fan shaped distribution to most of lateral brain surface, temporal, parietal and post frontal lobe
Put hand on head when thinking

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5
Q

Two posterior cerebral arteries (L PCA AND R PCA) supplied by

A

The basilar (via the vertebrals)

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6
Q

What does it supply

A

Occipital lobe, lower temporal lobe

Hair on back of neck

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7
Q

Difficulty with facial processing

A

PCA

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8
Q

Motor planning and initiation affected

A

Ant/middle CA

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9
Q

Stroke closer to heart more damage

A

Diffuse, global distribution

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10
Q

Less damage. If into capillaries

A

Focal

Concentrated area of impairment

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11
Q

Broca’s is in. Frontal lobe but supplied by

A

MCA

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12
Q

Capillaries can extend past their area

A

True

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13
Q

MCA called the

A

Zone of language, encompass comprehension and expression

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14
Q

PCA area brain map

A

Temporal-face processing/memory of the inferior medial part if temporal

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15
Q

Prefrontal cortex can be fed by

A

Both ant and middle CA

16
Q

Why have collateral supply

A

A system of blood supply to the brain in case of blockage

17
Q

There is some overlap between the cerebral arteries as distribution spreads out to

A

Small vessels at the periphery

18
Q

Blockages in supply at the periphery will have…

A

Less impact than blockage in supply elsewhere

19
Q

Peripheral blockages (small vessels) may have some compensation from…

A

Collateral distribution

20
Q

What is the blood brain barrier BBB

A

Selective permeability of capillaries, arteries

A astrocytes help form barrier

21
Q

BBB restricts toxic substances from

A

Leaving the bloodstream and entering the brain tissue or extracellular fluid

22
Q

BBB keeps most bacteria out but

A

Also keeps many helpful antibodies out

23
Q

Allows good stuff in and some bad stuff out

24
Oxygen and glucose
Get in
25
Carbon dioxide
Get out
26
Some hormones
Get through
27
But BBB is permeable to
Alcohol l, some | Heavy metals, caffeine, nicotine
28
Effectiveness of meds dependent on how you get the meds to cross the
BBB Sometimes gave to use glucose as Transport system Tight junctions hard to get meds through