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Flashcards in 6.1 Blood Supply Of CNS Deck (72):
0

Artery that connects ICA to posterior cerebellar artery

Posterior communicating a.

1

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

Central retinal a.

2

Supplies inferior horn of lateral ventricle

Anterior choroidal a.

3

Artery most prone to cerebrovascular accidents

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

4

Direct continuation of ICA

MCA

5

Supplies basal ganglia and internal capsule

Lenticulostriate a

6

Inferior branches of MCA supply 3 key functional areas

"WAO"
Wernicke's area
Auditory cortex
Optic radiations

7

Superior branches of MCA supply 3 key functional areas

Super Best Friends (lol)

Somatosensory cortex
Broca's
Frontal eye fields

8

MCA: upper extremities; ACA: _________

MCA: upper extremities; ACA: LOWER extremities

9

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

anterior cerebral a. ACA

10

Both vertebral arteries untie to form which artery

Basilar a.

11

Supplies inferior cerebellum, upper medulla, and lower pons

AICA anterior inferior cerebellar a

12

Branch of basilar a. That supplies the inner ear

Labyrinthine a

13

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

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

14

Terminal branch of basilar a.

Posterior cerebral artery

15

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

Calcarine a

16

Function is maintenance of consciousness

Reticular activating system (RAS)

17

What supplies the RAS

Deep perforating branches of PCA

18

The circle of Willis is formed by five arteries namely

Anterior and posterior communicating a
Anterior, middle, posterior cerebral a

19

ACA and MCA: ICA; PCA : _______

ACA and MCA: ICA; PCA : basilar a.

20

Branches of the basilar a. Supplying the brainstem

Paramedian a.
Short circumferential a.
Long circumferential a.

21

The cerebellum is supplied by 3 arteries namely

SAP
Superior cerebellar a
AICA PICA

22

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

Middle meningeal a

23

Branch of superficial vein that empties into the superior sagittal sinus

Superior cerebral vein

24

Branch of superficial vein that empties into the cavernous sinus

Superficial middle cerebral v

25

Drains the insula

Deep middle cerebral v

26

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

Inferior sagittal sinus

27

Sinus that empties at confluence

Straight sinus

28

Gives rise to sigmoid sinus

Transverse sinus

29

Drains interior of the cerebral hemispheres

Great cerebral vein of Galen

30

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

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

31

Vein that provides emergency drainage when IJV is blocked

Emissary vein

32

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

Vasocorona

33

Gives rise to anterior and posterior radicular a.

Segmental spinal a.

34

Anterior spinal a. Gives rise to which artery

Sulcal artery

36

Blood brain barrier is made up of three layers, namely

ABE
Astrocytes
Basement membrane
Endothelium

37

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

Hypophyseal artery

38

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

Opthalmic artery

39

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

Posterior communicating artery

40

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

Anterior choroidal artery

41

Two terminal branches of the internal carotid artery

Middle Cerebral artery
Anterior cerebral artery

42

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

Middle cerebral artery

43

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

Lenticulostriate arteries

44

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

Middle striate artery
Also known as recurrent artery of Heubner

45

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

contralateral hemiplegia which is greatest in the lower limb

46

Occlusion of both arteries of anterior cerebral artery is associated with

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

47

Occlusion of the middle cerebral artery may produce (3)

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

Contralateral sensory loss for position sense and discriminating tactile sense

Severe aphasia

48

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

Posterior inferior cerebellar artery

49

The PICA supplies the (3)

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

50

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

..anterior to the medulla
..to form the Basilar artery

51

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

Posterior and anterior spinal arteries

52

Branches of the basilar artery

Anterior inferior cerebellar artery
Labyrinthine arteries
Pontine arteries
Superior cerebellar arteries
Posterior cerebral arteries

53

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

anterior inferior cerebellar artery

54

Branch of the basilar artery which supplies the inner ear

Labyrinthine arteries

55

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

Superior cerebellar arteries

56

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

Posterior cerebral arteries

57

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

Calcarine artery from the posterior cerebral artery

58

Occlusion of the posterior cerebral artery produces

contralateral homonymous hemianopsia

59

Bilateral occlusion of the posterior cerebral arteries can lead to

a defect in memory

60

The circle of willis is formed by

Anterior cerebral artery
anterior communicating arteries
middle cerebral arteries
posterior communicating arteries
posterior cerebral arteries

61

The striatum is nourished mainly by

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

62

The internal capsule is supplied primarily by

Lateral striate arteries of the middle cerebral artery

63

Superficial cerebral veins drain into the

Dural sinuses

64

Deep cerebral veins drain into the

Internal cerebral vein and great cerebral vein`

65

The great cerebral vein of Galen drains the

interior of the cerebral hemispheres

66

The great cerebral vein of Galen drains into the

Straight (rectus) sinus

67

The great cerebral vein is formed by the junction of

Junction of the two internal cerebral veins

68

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

Right and left basal veins
Drain into the great cerebral veins

69

The straight sinus is formed by the

Inferior sagittal sinus and great cerebral vein

70

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

Confluence of the sinuses

71

Components of the blood brain barrier

Tight junctions between endothelial cells of the capillaries

Astrocytic processes

basement membrane

72

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

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