Arterial Supply to CNS Flashcards
Label the circle of willis
label blood supply to cerebrum
what paired arteries are responsible for blood supply to the brain?
internl carotid
vertebral
where do the internal carotid arteries originate?
bifurcation of left and right common carotid
levels of C4
at what vertebral level do the internal carotid arteries arise?
C4
where do the ICAs enter the brain?
carotid canal of temporal bone
inside the cranial cavity, the ICAs pass anteriorly through what?
cavernous sinus
list the 4 arteries each ICA gives rise to:
- ophthalmic artery
- posterior communicating artery
- anterior choroidal artery
- anterior cerebral artery
the vertebral arteries arise from what other vessel?
subclavian arteries
the vertebral arteries ascend how?
through posterior of neck via foramen transversarium
what are foramen transversarium?
transverse processes of cervical vertebrae
the vertebral arteries enter the cranial cavity through what?
the foramen magnum
list 3 branches of the vertebral arteries within the cranial vault
- meningeal branch
- anterior and posterior spinal arteries
- posterior inferior cerebellar artery
after branching, the vertebral arteries converge to form what?
basilar artery
how does the basilar artery terminate?
bifurcates into posterior cerebral arteries
what does the ophthalmic artery supply?
structures of orbit
what artery supplies the structures of orbit?
ophthalmic artery
what does the anterior choroidal artery supply?
structures in the brain important for motor control and vision
what artery supplies areas in the brain important for motor control and vision?
anterior choroidal artery
what does the anterior cerebral artery supply?
part of the cerebrum
after branching, the internal carotids continue as what?
middle cerebral arteries
what does the middle cerebral artery supply?
lateral portions of cerebrum
what does the meningeal branch supply?
falx cerebelli
what supplies the falx cerebelli?
meningeal branch of vertebral arteries
