6.1 Blood Supply Of CNS

Question 0

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

Answer 0

Central retinal a.

Question 1

Artery that connects ICA to posterior cerebellar artery

Answer 1

Posterior communicating a.

Question 2

Supplies inferior horn of lateral ventricle

Answer 2

Anterior choroidal a.

Question 3

Artery most prone to cerebrovascular accidents

Answer 3

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

Question 4

Direct continuation of ICA

Answer 4

MCA

Question 5

Supplies basal ganglia and internal capsule

Answer 5

Lenticulostriate a

Question 6

Inferior branches of MCA supply 3 key functional areas

Answer 6

“WAO”
Wernicke’s area
Auditory cortex
Optic radiations

Question 7

Superior branches of MCA supply 3 key functional areas

Answer 7

Super Best Friends (lol)

Somatosensory cortex
Broca’s
Frontal eye fields

Question 8

MCA: upper extremities; ACA: _________

Answer 8

MCA: upper extremities; ACA: LOWER extremities

Question 9

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

Answer 9

anterior cerebral a. ACA

Question 10

Both vertebral arteries untie to form which artery

Answer 10

Basilar a.

Question 11

Supplies inferior cerebellum, upper medulla, and lower pons

Answer 11

AICA anterior inferior cerebellar a

Question 12

Branch of basilar a. That supplies the inner ear

Answer 12

Labyrinthine a

Question 13

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

Answer 13

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

Question 14

Terminal branch of basilar a.

Answer 14

Posterior cerebral artery

Question 15

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

Answer 15

Calcarine a

Question 16

Function is maintenance of consciousness

Answer 16

Reticular activating system (RAS)

Question 17

What supplies the RAS

Answer 17

Deep perforating branches of PCA

Question 18

The circle of Willis is formed by five arteries namely

Answer 18

Anterior and posterior communicating a

Anterior, middle, posterior cerebral a

Question 19

ACA and MCA: ICA; PCA : _______

Answer 19

ACA and MCA: ICA; PCA : basilar a.

Question 20

Branches of the basilar a. Supplying the brainstem

Answer 20

Paramedian a.
Short circumferential a.
Long circumferential a.

Question 21

The cerebellum is supplied by 3 arteries namely

Answer 21

SAP
Superior cerebellar a
AICA PICA

Question 22

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

Answer 22

Middle meningeal a

Question 23

Branch of superficial vein that empties into the superior sagittal sinus

Answer 23

Superior cerebral vein

Question 24

Branch of superficial vein that empties into the cavernous sinus

Answer 24

Superficial middle cerebral v

Question 25

Drains the insula

Answer 25

Deep middle cerebral v

Question 26

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

Answer 26

Inferior sagittal sinus

Question 27

Sinus that empties at confluence

Answer 27

Straight sinus

Question 28

Gives rise to sigmoid sinus

Answer 28

Transverse sinus

Question 29

Drains interior of the cerebral hemispheres

Answer 29

Great cerebral vein of Galen

Question 30

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

Answer 30

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

Question 31

Vein that provides emergency drainage when IJV is blocked

Answer 31

Emissary vein

Question 32

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

Answer 32

Vasocorona

Question 33

Gives rise to anterior and posterior radicular a.

Answer 33

Segmental spinal a.

Question 34

Anterior spinal a. Gives rise to which artery

Answer 34

Sulcal artery

Question 36

Blood brain barrier is made up of three layers, namely

Answer 36

ABE Astrocytes Basement membrane Endothelium

Question 37

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

Answer 37

Hypophyseal artery

Question 38

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

Answer 38

Opthalmic artery

Question 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

Answer 39

Posterior communicating artery

Question 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

Answer 40

Anterior choroidal artery

Question 41

Two terminal branches of the internal carotid artery

Answer 41

Middle Cerebral artery | Anterior cerebral artery

Question 42

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

Answer 42

Middle cerebral artery

Question 43

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

Answer 43

Lenticulostriate arteries

Question 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

Answer 44

Middle striate artery | Also known as recurrent artery of Heubner

Question 45

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

Answer 45

contralateral hemiplegia which is greatest in the lower limb

Question 46

Occlusion of both arteries of anterior cerebral artery is associated with

Answer 46

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

Question 47

Occlusion of the middle cerebral artery may produce (3)

Answer 47

Contralateral hemiplegia (most marked in the upper extremity and face) Contralateral sensory loss for position sense and discriminating tactile sense Severe aphasia

Question 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

Answer 48

Posterior inferior cerebellar artery

Question 49

The PICA supplies the (3)

Answer 49

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

Question 50

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

Answer 50

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

Question 51

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

Answer 51

Posterior and anterior spinal arteries

Question 52

Branches of the basilar artery

Answer 52

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

Question 53

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

Answer 53

anterior inferior cerebellar artery

Question 54

Branch of the basilar artery which supplies the inner ear

Answer 54

Labyrinthine arteries

Question 55

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

Answer 55

Superior cerebellar arteries

Question 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

Answer 56

Posterior cerebral arteries

Question 57

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

Answer 57

Calcarine artery from the posterior cerebral artery

Question 58

Occlusion of the posterior cerebral artery produces

Answer 58

contralateral homonymous hemianopsia

Question 59

Bilateral occlusion of the posterior cerebral arteries can lead to

Answer 59

a defect in memory

Question 60

The circle of willis is formed by

Answer 60

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

Question 61

The striatum is nourished mainly by

Answer 61

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

Question 62

The internal capsule is supplied primarily by

Answer 62

Lateral striate arteries of the middle cerebral artery

Question 63

Superficial cerebral veins drain into the

Answer 63

Dural sinuses

Question 64

Deep cerebral veins drain into the

Answer 64

Internal cerebral vein and great cerebral vein`

Question 65

The great cerebral vein of Galen drains the

Answer 65

interior of the cerebral hemispheres

Question 66

The great cerebral vein of Galen drains into the

Answer 66

Straight (rectus) sinus

Question 67

The great cerebral vein is formed by the junction of

Answer 67

Junction of the two internal cerebral veins

Question 68

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

Answer 68

Right and left basal veins | Drain into the great cerebral veins

Question 69

The straight sinus is formed by the

Answer 69

Inferior sagittal sinus and great cerebral vein

Question 70

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

Answer 70

Confluence of the sinuses

Question 71

Components of the blood brain barrier

Answer 71

Tight junctions between endothelial cells of the capillaries Astrocytic processes basement membrane

Question 72

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

Answer 72

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