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ANATOMY > 6.1 Blood Supply Of CNS > Flashcards

6.1 Blood Supply Of CNS Flashcards

0
Q

Branch of ophthalmic a. That provides sole supply to the retina

A

Central retinal a.

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1
Q

Artery that connects ICA to posterior cerebellar artery

A

Posterior communicating a.

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2
Q

Supplies inferior horn of lateral ventricle

A

Anterior choroidal a.

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3
Q

Artery most prone to cerebrovascular accidents

A

Middle cerebral artery (Lansang) specifically Lenticulostriate arteries (2017A)

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4
Q

Direct continuation of ICA

A

MCA

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5
Q

Supplies basal ganglia and internal capsule

A

Lenticulostriate a

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6
Q

Inferior branches of MCA supply 3 key functional areas

A

“WAO”
Wernicke’s area
Auditory cortex
Optic radiations

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7
Q

Superior branches of MCA supply 3 key functional areas

A

Super Best Friends (lol)

Somatosensory cortex
Broca’s
Frontal eye fields

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8
Q

MCA: upper extremities; ACA: _________

A

MCA: upper extremities; ACA: LOWER extremities

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9
Q

Supplies septal area or the gray matter structures of telencephalon and limbic system

A

anterior cerebral a. ACA

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10
Q

Both vertebral arteries untie to form which artery

A

Basilar a.

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11
Q

Supplies inferior cerebellum, upper medulla, and lower pons

A

AICA anterior inferior cerebellar a

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12
Q

Branch of basilar a. That supplies the inner ear

A

Labyrinthine a

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13
Q

Posterior cerebral artery: choroid plexus of 3rd ventricle; ______ : choroid plexus of 4th ventricle

A

Posterior cerebral artery: choroid plexus of 3rd ventricle; PICA : choroid plexus of 4th ventricle

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14
Q

Terminal branch of basilar a.

A

Posterior cerebral artery

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15
Q

Branch of PCA which supplies the visual cortex at the occipital lobe

A

Calcarine a

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16
Q

Function is maintenance of consciousness

A

Reticular activating system (RAS)

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17
Q

What supplies the RAS

A

Deep perforating branches of PCA

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18
Q

The circle of Willis is formed by five arteries namely

A

Anterior and posterior communicating a

Anterior, middle, posterior cerebral a

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19
Q

ACA and MCA: ICA; PCA : _______

A

ACA and MCA: ICA; PCA : basilar a.

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20
Q

Branches of the basilar a. Supplying the brainstem

A

Paramedian a.
Short circumferential a.
Long circumferential a.

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21
Q

The cerebellum is supplied by 3 arteries namely

A

SAP
Superior cerebellar a
AICA PICA

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22
Q

Branch of ECA that supplies no CNS tissue but is ruptured when there is fracture of the lateral skull vault

A

Middle meningeal a

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23
Q

Branch of superficial vein that empties into the superior sagittal sinus

A

Superior cerebral vein

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24
Q

Branch of superficial vein that empties into the cavernous sinus

A

Superficial middle cerebral v

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25
Q

Drains the insula

A

Deep middle cerebral v

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26
Q

It is joined by the great cerebral vein and forms the straight sinus

A

Inferior sagittal sinus

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27
Q

Sinus that empties at confluence

A

Straight sinus

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28
Q

Gives rise to sigmoid sinus

A

Transverse sinus

29
Q

Drains interior of the cerebral hemispheres

A

Great cerebral vein of Galen

30
Q

Superior petrosal sinus: enters transverse sinus; inferior petrosal sinus: enters ______

A

Superior petrosal sinus: enters transverse sinus; inferior petrosal sinus: enters BULB OF JUGULAR V

31
Q

Vein that provides emergency drainage when IJV is blocked

A

Emissary vein

32
Q

The anterior spinal a. Forms a circumferential plexus with posterior spinal a. Called

A

Vasocorona

33
Q

Gives rise to anterior and posterior radicular a.

A

Segmental spinal a.

34
Q

Anterior spinal a. Gives rise to which artery

A

Sulcal artery

36
Q

Blood brain barrier is made up of three layers, namely

A

ABE
Astrocytes
Basement membrane
Endothelium

37
Q

Major branch of the internal carotid artery before the terminal branches that supplies the hypophysis and constitutes part of the hypophyseal portal system

A

Hypophyseal artery

38
Q

Major branch of the internal carotid artery before the terminal branches that supplies the eye and orbital contents

A

Opthalmic artery

39
Q

Major branch of the internal carotid artery before the terminal branches that joins th proximal part of the posterior cerebral artery forming part of the circle of willis

A

Posterior communicating artery

40
Q

Major branch of the internal carotid artery before the terminal branches that supplies the choroid plexus, optic tract basal ganglia, lateral geniculate body and ventral part of the internal capsule

A

Anterior choroidal artery

41
Q

Two terminal branches of the internal carotid artery

A

Middle Cerebral artery

Anterior cerebral artery

42
Q

This artery is regarded as the direct continuation of the internal carotid artery and supplies the dorsolateral surface of the cerebral hemispheres

A

Middle cerebral artery

43
Q

These arteries are most prone to cerebrovascular accidents and supplies the internal capsule and portions of basal ganglia

A

Lenticulostriate arteries

44
Q

The ___ artery, aka as ____, supplies the anteromedial part of the head of the caudate nucleus, adjacent parts of the internal capsule, and putamen, and parts of the septal nuclei

A

Middle striate artery

Also known as recurrent artery of Heubner

45
Q

Occlusion of the trunk of one anterior cerebral artery may produce a

A

contralateral hemiplegia which is greatest in the lower limb

46
Q

Occlusion of both arteries of anterior cerebral artery is associated with

A

bilateral paralysis especially in the lower limbs and impaired sensation that mimics a spinal cord lesion

47
Q

Occlusion of the middle cerebral artery may produce (3)

A

Contralateral hemiplegia (most marked in the upper extremity and face)

Contralateral sensory loss for position sense and discriminating tactile sense

Severe aphasia

48
Q

Shortly after entering the cranial cavity, each vertebral artery gives off the ___ which supplies the inferior part of the cerebellum, lateral third of the medulla, and choroid plexus of the 4th ventricle

A

Posterior inferior cerebellar artery

49
Q

The PICA supplies the (3)

A

Inferior part of the cerebellum
Lateral third of the medulla
Choroid plexus of 4th ventricle

50
Q

The vertebral arteries of the two sides then fuse anterior to the __ to form the __

A

..anterior to the medulla

..to form the Basilar artery

51
Q

The vertebral artery gives off the __ to supply the spinal cord

A

Posterior and anterior spinal arteries

52
Q

Branches of the basilar artery

A 
Anterior inferior cerebellar artery
Labyrinthine arteries
Pontine arteries
Superior cerebellar arteries
Posterior cerebral arteries
53
Q

Branch of the basilar artery which supplies the inferior cerebellum, upper medulla, and lower pons

A

anterior inferior cerebellar artery

54
Q

Branch of the basilar artery which supplies the inner ear

A

Labyrinthine arteries

55
Q

Branch of the basilar artery which supplies the dorsal surface of the cerebellum, pons, and superior cerebellar peduncle

A

Superior cerebellar arteries

56
Q

Branch of the basilar artery which are the terminal branches of the basilar artery that supplies cerebral peduncles, RAS, occipital lobe, and choroid plexuses of 3rd and lateral ventricles

A

Posterior cerebral arteries

57
Q

This artery supplies the primary visual cortex and is a branch of ___

A

Calcarine artery from the posterior cerebral artery

58
Q

Occlusion of the posterior cerebral artery produces

A

contralateral homonymous hemianopsia

59
Q

Bilateral occlusion of the posterior cerebral arteries can lead to

A

a defect in memory

60
Q

The circle of willis is formed by

A 
Anterior cerebral artery
anterior communicating arteries
middle cerebral arteries
posterior communicating arteries
posterior cerebral arteries
61
Q

The striatum is nourished mainly by

A

lateral striate branches of middle cerebral a.
Medial striate artery of Heubner
Anterior choroidal a.

62
Q

The internal capsule is supplied primarily by

A

Lateral striate arteries of the middle cerebral artery

63
Q

Superficial cerebral veins drain into the

A

Dural sinuses

64
Q

Deep cerebral veins drain into the

A

Internal cerebral vein and great cerebral vein`

65
Q

The great cerebral vein of Galen drains the

A

interior of the cerebral hemispheres

66
Q

The great cerebral vein of Galen drains into the

A

Straight (rectus) sinus

67
Q

The great cerebral vein is formed by the junction of

A

Junction of the two internal cerebral veins

68
Q

The __ veins drains the anterior of the cerebrum and drain into the __

A

Right and left basal veins

Drain into the great cerebral veins

69
Q

The straight sinus is formed by the

A

Inferior sagittal sinus and great cerebral vein

70
Q

This is the sinus where the superior sagittal sinus, straight sinus, and transverse sinuses meet

A

Confluence of the sinuses

71
Q

Components of the blood brain barrier

A

Tight junctions between endothelial cells of the capillaries

Astrocytic processes

basement membrane

72
Q

Radicular and radiculospinal arteries branch off the ___ in the neck, off the ___ in the thorax, and off the __ at the abdominal level

A

At the level of the…
Neck: vertebral artery
Thorax: intercostal arteries
Abdomen: aorta

ANATOMY (33 decks)

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