CNS Vasular Structure

Question 1

Trace circulation from L ventricle to innermost artery:
RIGHT SIDE
ANTERIOR

Answer 1

L ventricle-> ascending aeorta -> brachiocephalic A-> R common carotid A. -> R internal carotid A.

Question 2

Trace circulation from L ventricle to innermost artery:
LEFT SIDE
ANTERIOR

Answer 2

L ventricle-> ascending aeorta -> aortic arch -> L common carotid -> L internal carotid

Question 3

Trace circulation from L ventricle to innermost artery:
RIGHT SIDE
POSTERIOR

Answer 3

L ventricle-> ascending aeorta -> brachiocephalic A-> R subclavian A -> R vertebral A

Question 4

Trace circulation from L ventricle to innermost artery:
LEFT SIDE
POSTERIOR

Answer 4

L ventricle-> ascending aeorta -> aortic arch -> L subclavian A-> L Vertebral A

Question 5

What does the Anterior Cerebral A. (ACA) supply?

Answer 5

MEDIAL frontal and parietal lobes
Cingulate cortex (gyrus)
Corpus collosum

Question 6

What are the 2 major branches of the Anterior Cerebral A. (ACA)

Answer 6

Callosomargional A
Perucallosal A

Question 7

What are the 3 divisions of the middle cerebral artery (MCA)

Answer 7

Stem (Lenticulostriate A)
Superior division
Inferior division

Question 8

What does the middle cerebral artery (MCA) suplpy

Answer 8

LATERAL frontal lobe
LATERAL parietal lobe !! (called mid but supply lat)
Insualar cortex
MEDIAL & LATERAL temporal lobes
subcortical deep structures
- basal ganglia
- internal capsule
-limbic structures

Question 8

What does the Anterior Choroidal A supply

Answer 8

Choroid plexus (lateral ventricle)
Optic tract
Deep structures of telencephalon
-internal capsule (highway pitstop)
-basal ganglia (motor)
-thalamus (sensory relay)

Question 8

What does the Anterior Communicating A. do how many are there?

Answer 8

connects the two ACAs
1

Question 9

Benifit of the circle of willis

Answer 9

to produce a detor for blood if injuey

Question 10

Function of the posterior communicating A
how mnay are there

Answer 10

Connects MCAs to PCAs, it can also supply diencephalon structures
2

Question 11

Visualize the circle of willis

Answer 11

Question 12

Which arteries supply the cortex

Answer 12

Middle cerebral A. MCA
Anterior cerebral A. ACA
Posterior cerebral A. PCA

Question 13

What does the Posterior cerebral A. (PCA) supply?

Answer 13

MEDIAL and INFERIROR occipital lobes
INFERIOR temporal lobes
Subcortical (below cortex) structures (midbrain, thalamus, etc.)

Question 14

Branches of the Vertebral A.

Answer 14

Anterior Spinal A

Posterior Inferior Cerebellar A (PICA)-> Posterior Spinal. A (branch off PICA)

Basilar A->Anterior Inferior Cerebellar A (AICA)-> Labyrinthine A

Question 15

What does the Anterior Spinal A supply

Answer 15

• branch of vertebral
• MEDIAL medulla
  -anterior 2/3 of spinal cord

Question 16

what does the Posterior Spinal. A supply

Answer 16

dorsal medial medulla
-posterior 1/3 of spinal cord

Question 17

What does the posterior inferior cerebellar A (PICA) supply?

Answer 17

-LATERAL medulla
-inferior cerebellum!!!!!!

Question 18

What are the branches of the basilar A?

Answer 18

Anterior Inferior Cerebellar A (AICA)-> Labyrinthine A

Pontine A

Superior Cerebellar A (SCA)

Posterior Cerebral A

Question 19

What does the Anterior Inferior Cerebellar A (AICA) supply?

Answer 19

lateral caudal pons
cerebellum (small region)

Question 20

What does the labyrinthine A supply

Answer 20

Cochlea
Vestibular Apparatus

Question 21

What is one of the only strokes that present with hearing LOSS

Answer 21

labyrinthine A

Question 22

What does the pontine A supply

Answer 22

rostral lateral pons

Question 23

What does the Superior Cerebellar A (SCA) supply?

Answer 23

Cerebellum Rostral dorsolateral pons

Question 24

WHat are the arteries that branch off the main branches to further supply deeper brainstem structures

Answer 24

paramedian and circumferential A

Question 25

What artery branches off descending thoracic aorta and supplies spinal nerve roots? What what are the two main ones for cervical & thoracic and lumbar & sacral?

Answer 25

Segmental radicular A - cervical & thoracic- thoracic radicular A - lumbar & sacral- great radicular A of adamkiewicz

Question 26

diff between veins and venus sinuses

Answer 26

veins rely on valve system sinuses do NOT

Question 27

Where are venus sinuses and where do they drain into

Answer 27

between Periosteal and meningeal dural layers - drain to internal jugular vein

Question 28

ACA stroke imparments

Answer 28

LOWER EXTREMITY: Contralateral weakness, motor control, tone, contralateral sensory loss, Visual deficits impaired bilateral integration (1 side can lift arm both sides cant, bc loose supply to PriMC in frontal lobe and corpus collosum) impaired cognition and executive function (pre/frontal cortex), Urinary incontinence and lack of emotional regulation (cingulate cortex & hypothalamus)

Question 29

MCA stroke impairments

Answer 29

UPPER EXSTREMITY Contralateral weakness, motor control, tone, contralateral sensory loss, Contralateral visual deficits , Contralateral extraocular weakness (movement of eye) perceptual deficits (depth perception) Speech deficits Auditory processing (can hear but cant put meaning)

Question 30

PCA stroke impairments

Answer 30

Contralateral visual deficits Cortical blindness Perceptual deficits Dyslexia Memory deficits Neuropathic pain Involuntary movments Weakness