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CADE Block 2 (Written) > Blood Supply to and From CNS > Flashcards

Blood Supply to and From CNS Flashcards

1
Q

Blood supply to the spinal cord arises from what?

A
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2
Q

What do radicular arteries do?

A

Travel along dorsal and ventral roots of spinal cord to reach the blood supply. “Radicule” means root

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3
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4
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5
Q

Verterbal arteries are branches of what major artery?

What does it travel through to reach what?

A
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6
Q

What are the arrows pointing to?

What is this area its going through called?

A
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7
Q

Vertebral arteries enter the base of the skull through what?

What do they give rise to once they do?

A
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8
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9
Q

Anterior spinal artery supplies ___ of the spinal cord, including ____ horns, _____horns, ____ and ___ funiculi, ______, _______

A
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10
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11
Q

The posterior spinal arteries supply the posterior ___ of spinal cord, including:

A
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12
Q

Where do anterior and posterior spinal arteries not extend? What do we need because of this?

A

Back up plan is segmental arteries, which provide blood supply to thoracic and lumbar levels

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13
Q

Trace the path of segmental arteries. Where do they arise, what do they branch into, and what do these things anastomose into?

A
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14
Q

Whats the main function of segmental arteries?

A

They provide main blood supply to spinal cord at thoracic and lumbar levels

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15
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A
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16
Q

What is the special segmental artery between T5 and L3?

What’s its main job?

A
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17
Q
A
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18
Q

The venous drainage of the spinal cord generally follow what pattern?

Blood passes from spinal veins to what?

A
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19
Q

After blood passes into the epidural internal venous plexus (of Batson), where does it drain?

A
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20
Q

What is special about the epidural internal venous plexus (of Batson) veins?

A

They are veins that permit bi-directional flow and serve as path for transmission of inectious agents and tumor cells

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21
Q

What is this?

A

Epidural internal venous plexus (of Batson)

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22
Q

What percentage of cardiac output goes to the brain?

What are the 2 pairs of vessels that the brain consists of?

A
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23
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24
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25
Q

What does the internal carotid artery give rise to? 5 things

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26
Q
A
27
Q

What does the anterior cerebral artery supply? 3 things (what areas of motor and sensory cortex?)

A

3rd thing is anterior limb of internal capsule (via medial striate artery (recurrent artery of Heubner)

28
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29
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30
Q

Middle cerebral artery supplies what?3 things Also what part of motor and sensory cortex?

A

3rd thing is anterior and posterior limbs of internal capsule (via lenticulostriate arteries)

31
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A
32
Q

The middle cerebral artery supplies the ___ and ___ limbs of the internal capsule via what arteries?

What are these arteries prone to in what disease? Why?

A

Prone to hypertension because they are so small and long

33
Q
A
34
Q

Vertebral arteries join to form the ___ artery.

Branches of verterbral arteries include what?

A
35
Q

The posterior inferior cerebellar artery (PICA) gives rise to what?

A
36
Q
A
37
Q

The basilar artery branches include: (3) arteries

A
38
Q
A
39
Q

Posterior cerebral arteries form what branch of the basilar artery?

They provide major blood supply to what region?

Also 3 other structures

A
40
Q
A
41
Q

What is the circle of Willis?

Formed by what? (5)

Gives off penetrating branches to what structures (3)

A
42
Q

What is an aneurysm?

Where do Berry (saccular) aneurysms develop?

Rupture is a common cause of what?

A
43
Q

What are watershed zones?

A
44
Q

What are superficial veins devoid of? Where do they lie? Where do they drain from? Where do they terminate? Where do they drain to?

A
45
Q

What does the laceration of superficial veins result in? How can this happen, and who’s at risk?

Will the sympoms come on quickly or slowly?

A

subdural hematoma

It can happen when someone, such as an hold person, falls

neurologic symptoms come on slowly over the course of several days

46
Q
A
47
Q

Deep cerebral veins drain what kind of structues?

Anterior cerebral veins and deep middle cerebral veins drain to what?

Basal veins join ___ ___ veins to form ___ ___ of ____

A
48
Q
A
49
Q

What artery supplies the spinal cord generally?

A

Branches of the vertebral arteries

50
Q

What artery supplies the dorsal columns of the spinal cord? (fine touch, vibration, position sense)

A

Posterior spinal artery

51
Q

What artery supplies the spinothalamic tract in the spinal cord?

A

Anterior spinal artery

52
Q

What artery supplies the medial lemniscus in the medulla?

A

Anterior spinal artery and paramedian branches of vertebral (switches blood supply because axons from dorsal colum nuclei trael ventral medial as they cross midline)

53
Q

What artery supplies the spinothalamic tract in the medulla?

A

PICA and circumferential branches of vertebral (in spinal cord the spinothalamic tract is located ventral lateral but assumes a more dorsal lateral position in the medulla)

54
Q

Branches of what supply the pons, generally?

A

Branches of the basilar artery

55
Q

In the caudal pons, what artery supplies the medial lemniscus?

A

Paramedian branches of the basilar (although it has moved dorsal in location it maintains a more medial position)

56
Q

In the caudal pons, what artery supplies the spinothalamic tract?

A

Circumfrential branches of basilar and AICA (because of more lateral location of this tract)

57
Q

In the mid to rostral pons, what artery supplies the medial lemniscus?

A

Oaramedian and circumfrential branches of the basilar (because ML has moved lateral and anatomically closer to the spinothalamic tract)

58
Q

In mid to rostral pons, what branches supply the spinothalamic tract?

A

circumferential branches of basilar (because of more lateral location of this tract)

59
Q

In mid brain, what branches generally supply this are?

A

Branches of the top of the basilar and proximal posterior cerebral arteries

60
Q

In midbrain, what arteries supply medial lemniscus and spinothalamic tract?

A

circumferential branches of the proximal posterior cerebral (because these pathwasy have moved more dorsal lateral)

61
Q

What does the posterior inferior cerebellar artery (PICA) give rise to? Also what does it supply blood to?

A

Gives rise to the posterior spinal artery,

supplies dorsolateral medulla

supplies inferior cerebellum and fourth ventricle, infererior cerebellar peduncle, spinothalamic tract

CADE Block 2 (Written) (15 decks)

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