CNS Vasculature Flashcards
anterior circulation
RIGHT side
- L ventricle
- Ascending aorta
- Brachiocephalic a.
- R common carotid .
- R internal carotid a.
anterior circulation
LEFT side
- L ventricle
- Ascending aorta
- Aortic arch
- L common carotid a.
- L internal carotid a.
posterior circulation
RIGHT side
- L ventricle
- Ascending aorta
- Brachiocephalic a.
- R subclavian a.
- R vertebral a
posterior circulation
LEFT side
- L ventricle
- Ascending aorta
- Aortic arch
- L subclavian a.
- L vertebral a.
anterior circulation includes…
a. Anterior cerebral a.
b. Middle cerebral a.
c. Anterior choroidal a.
d. Anterior communicating a.
e. Posterior communicating a.
f. Ophthalmic a.
anterior cerebral a.
ACA
- Runs in longitudinal fissure above corpus callosum – to medial aspects of frontal and parietal lobes
i- Branches into 2 major arteries 1. callosomarginal a.
2. pericallosal a.
medial cerebral a.
MCA
- Travels laterally in sylvan fissure to lateral frontal and parietal lobes, insular cortex, medial and lateral temporal lobes, subcortical deep structures
- Feeds Basal ganglia, internal capsule, limbic structures
anterior choroidal a.
a. Arises off of the internal carotid a., near where the MCA arises
Supplies:
- Choroid plexus of lateral ventricles – CSF
- Optic tract, deep structures in the telencephalon
- Posterior limb of internal capsule, portions of basil ganglia
lenticulostiate a.
a. Small a. off of the stem of the MCA
b. Supplies the basil ganglia
components of the circle of willis
- ACA
- anterior communicating a
- posterior communicating a
- PCA
posterior circulation includes…
a. Posterior cerebral a.
b. Basilar a.
c. Superior cerebellar a.
d. Labyrinthine a.
e. Anterior inferior cerebellar a. AICA
f. Posterior interior cerebellar a. PICA
g. Anterior spinal a.
posterior cerebral a
PCA
Superficial branch
ii. SUPPLY medial and inferior occipital lobes, inferior temporal lobes
Deep branch
ii. SUPPLY subcortical structures: midbrain, thalamus, subthalmic structures
what branches of off the vertebral a.
- posterior inferior cerebellar a
- anterior spinal a
- posterior spinal a
- basilar a
what branches off of the basilar a.
- anterior inferior cerebellar a.
- labyrinthine a.
- pontine a.
- superior cerebellar a.
- posterior cerebral a.
PICA
supply
SUPPLY lateral medulla and inferior cerebellum
anteriore spinal a.
supply
SUPPLY medial medulla and anterior 2/3 of spinal cord
posterior spinal a.
supply
SUPPLY dorsal medial medulla and posterior 1/3 of spinal cord
AICA
supply
SUPPLY lateral and caudal pons and cerebellum (small region)
labyrinthine a.
supply
SUPPLY internal acoustic meatus to cochlea and vestibular apparatus
pontine a.
supply
SUPPLY rostral lateral pons
superior cerebellar a.
supply
SUPPLY cerebellum, some of rostral, dorsolateral pons
posterior cerebral a.
supply
SUPPLY Inferior temporal and occiput
segmental radicular a.
- branch off descending thoracic aorta
- enter via nerve roots
what are the two major pathways that drainage will travel through the cerebral sinus system?
- Straight sinus - superior and inferior sagittal sinus - transverse sinus - sigmoid sinus - internal jugular v.
- Cavernous sinus - superior and inferior petrosal sinus - internal jugular v.
what makes up the superficial veinous drainage
- superior cerebral v.
- Superficial middle cerebral v
- inferior cerebral v
- superior anastomotic v.
- inferior anastomotic v.
superior cerebral v
drains
i. DRAINS superior surface of each hemisphere
superior cerebral v
goes to..
superior sagittal sinus
Superficial middle cerebral v
drains
i. DRAINS lateral surface of each hemisphere
Superficial middle cerebral v
goes to…
cavernous sinus
inferior cerebral v
drains
i. DRAINS inferior aspect of each hemisphere
inferior cerebral v
goes to…
cavernous sinus and transverse sinus
superior anastomotic v.
connects…
i. Connects superficial middle cerebral v to superior sagittal sinus
inferior anastomotic v. connects…
i. Connects superficial middle cerebral v to transverse sinus
What veins make up the deep venous system
- anterior cerebral v
- deep middle cerebral v.
- subepndymal v.
- medullary v.
anterior cerebral v
drains
i. DRAINS deep middle regions of each hemisphere
anterior cerebral v
goes to…
transverse sinus
deep middle cerebral v.
drains..
i. DRAINS insular cortex and some deep lateral regions of each hemisphere
deep middle cerebral v.
goes to…
transverse sinus
what 3 veins make up the subepndymal v.
- basal v
- internal cerebral v
- great v of galen
basal v
drains
- DRAINS medial temporal lobes
basal v
goes to…
great v of galen
internal cerebral v
goes to…
great v of galen
great v of galen
drains…
DRAINS thalamus
great v of galen
goes to…
inferior sagittal and straight sinus
medullary v
brain stem