CNS Blood Supply Spinal cord Flashcards
Where are the arterial blood supply of the cns derived from
ICA
Vertebral arteries
The cavernous and supraclinoid portions of the internal carotid artery are referred to as what
Carotid siphon
Caroticotympanic and vidian artery are part of what segment of the ICA
C2- Petrous or horizontal
Meningohypophyseal trunk and inferolateral trunk comes from what segment of ICA
Cavernous segment
Opthalmic and superior hypophyseal artery came from what segment
Opthalmic or supraclinoid segment
This arises from the posterosuperior aspect of the 1st part of the subclavian artery
vertebral artery
Formed by the Union of the two vertebral arteries at the lower border of the pons
Basilar artery
What are the branches of the basilar artery
Pontine Internal auditory AICA Superior xerebellar Right and left posterior cerebral
Most common variant vessel in the circle of Willis
Posterior communicating artery
MRI technique to visualize flow within the vessels
Time of flight angiography
Level of the ACA that Arises from the internal carotid artery and passes anteriorly superior to the optic chiasm
A1
Level of the ACA that runs in the interhemispheric fissure
A2
Largest and most direct of the branches of the ICA and most prone to embolism
MCA
What are the segments of the MCA
Horizontal
Insular
Opercular
cortical
Important hemispheric tributary to the vein of trolard
Superior sagittal sinus
Terminates at the falcotentorial apex and join the vein of Galen to from the straight sinus
Inferior sagittal sinus
Receives tributaries from the falx, tentorium and cerebral hemisphere
Straight sinus
This terminates by becoming the internal jugular vein
Sigmoid sinus
This artery usually arises from the left side and or the intercostal arteries at the level of T9 to T12
Artery of Adamkiewicz
