2-1: Brain Sciences - 1/13: Blood Supply, Meninges & Csf

Front 1

What artery gives rise to anterior circulation in the brain? Posterior circulation?

Back 1

Anterior: Internal Carotid

Posterior: Vertebral Artery

Front 2

Which arteries of cerebral circulation arise from the internal carotid?

Back 2

Anterior Cerebral, Middle Cerebral aa

Front 3

Which arteries of cerebral circulation arise from the vertebral arteries?

Back 3

Basilar and Posterior Cerebral aa

Front 4

What do communicating arteries allow for?

Back 4

Anastamoses

Front 5

What cerebral artery supplies the lateral surface of the brain?

Back 5

Middle Cerebral Artery

Front 6

What cerebral artery supplies the occipital lobe?

Back 6

Posterior Cerebral Artery

Front 7

What cerebral artery supplies the medial surface of the brain?

Back 7

Anterior Cerebral Artery

Front 8

Damage to what artery can affect blood supply to both the medulla and cerebellum?

Back 8

Posterior Inferior Cerebellar Artery

Front 9

What arteries supply the spinal cord?

Back 9

Anterior 2/3 spine: Anterior Spinal Artery
Posterior 1/3 spine: Posterior Spinal Arteries (L and R)

Front 10

If an anterior spinal artery were severed, what sensory and motor modalities would be lost? Preserved?

Back 10

Lose: Ant/Lat columns (Pain, Temp, Touch; Muscle paralysis/weakness)

In tact: Fine touch (travels dorsally; supplied by posterior spinal arteries)

Front 11

Why are bridging veins clinically relevant in the elderly?

Back 11

As patients get older, bridging veins become brittle and can bleed (SUBDURAL HEMATOMA)

Front 12

Where in the dura is CSF contained?

Back 12

Subarachnoid space

Front 13

What cells do brain tumors normally arise from?

Back 13

Glial cells (gliomas)
Meningeal cells (meningiomas)

Front 14

How might an uncal herniation arise? Clinical signs?

Back 14

Epidural hematoma (skull fracture; can be due to slips, falls, blunt force trauma) can cause uncus to compress CN III

Signs: pupils won't constrict (accommodation reflex), occurs on SAME SIDE as herniation

Front 15

Where is CSF made?

Back 15

Choroid Plexus of Lateral Ventricle and Choroid Plexus of Fourth Ventricle

(makes 500 mL a day! Constantly turned over bc brain only can circulat 150 mL)

Front 16

Beginning with the lateral ventricle and ending with the superior sagittal sinus, outline the path CSF takes.

Back 16

1. lateral ventricle
2. Foramen of Monroe
3. Third Ventricle
4. Cerebral Aqueduct
5. Fourth Ventricle
6. Foramen of Luschka (Lateral) OR Foramen of Magendie (medial)
7. Subarachnoid space
8. Arachnoid granulations
9. Superior saggital sinus (drain drain)

Front 17

Back 17

Front 18

Diagram of cerebral circulation

Back 18

Front 19

Back 19

Face/Head; Middle Cerebral a

Front 20

Back 20

MCA

Front 21

Back 21

ACA; legs/feet

Front 22

Identify arterial supplies.

Back 22

Front 23

Back 23

PICA; Right Side of Body

Front 24

Identify.

Back 24

Front 25

Identify.

Back 25

Front 26

Back 26