Arterial Supply Flashcards
What are the long/circumferential branches of the internal carotid artery?
MCA
ACA
What connects the internal carotid artery and vertebral arteries?
Circle of Willis
What are the long/circumferential branches of the ACA?
cortical branches to the medial aspect of frontal and parietal lobes
arteries to corpus callosum
What are the long/circumferential branches of the MCA?
cortical branches to frontal, parietal and temporal lobes
What are the long/circumferential branches of the vertebral a.?
posterior inferior cerebellar a.
posterior spinal a.
What are the long/circumferential branches of the basilar a.?
Superior cerebellar a.
Pontine arteries (long)
Anterior inferior cerebellar a.
What are the short/penetrating branches of the internal carotid a.?
posterior communicating a.
anterior choroidal a.
What are the short/penetrating branches of the ACA?
medial striate a./recurrent a. of Huebner
What are the short/penetrating branches of the MCA?
lenticulostriate aa.
What are the short/penetrating branches of the vertebral a.?
anterior spinal
What are the short/penetrating branches of the basilar a.?
pontine aa. (short)
What are the short/penetrating branches of the posterior cerebral a.?
posterior choroidal a.
arteries to thalamus
What are the parts of the internal carotid a.?
cervical part (C1) petrous part (C2) cavernous part (C3) Supraclinoid/Intracranial/Cerebral part (C4)
What part of the internal carotid a. pierces the dura mater?
C4
What are the branches of C4 of the internal carotid a.?
opthalmic arteries
PComm aa.
Anterior choroidal aa.
What supplies the orbit and optic n.?
opthalmic arteries
What anastomoses with the post. cerebral aa.?
PComm aa.
What supplies the deep cortical structures?
ant. choroidal aa.
Where is the ACA located?
longitudinal fissure
What links the 2 ACAs?
AComm a.
What does the ACA supply?
cingulate gyrus
optic chiasm
medial aspect of the frontal and parietal lobes
What are signs and symptoms of an ACA infarct?
Behaviour changes (frontal lobe)
Contralateral leg and foot weakness (precentral gyrus)
Contralateral leg and foot sensory loss (postcentral gyrus)
Which is the larger of the two branches of the internal carotid a.?
MCA
What artery can be found in the lateral sulcus (Sylvian fissure)?
MCA
What arteries supply the basal ganglia and internal capsule? What are these arteries branches of?
lenticulostriate aa.; MCA
What does the superior division of the MCA supply?
lat. surface of the frontal lobe
ant. portion of the parietal lobe
What does the inferior division of the MCA supply?
med. and lat. temporal lobe, temporal pole and post. portions of the parietal lobe
What is a sign/symptom for a right superior MCA infarct?
Weakness and/or sensory loss of the lt. side
What is a sign/symptom for a left superior MCA infarct?
Weakness and/or sensory loss of rt. side
Broca’s aphasia (non-fluent speech)
What is a sign/symptom for a right inferior MCA infarct?
sensory loss of lt. face, hand and arm
lt. hemineglect
What is a sign/symptom for a left inferior MCA infarct?
sensory loss from rt. face, hand and arm
Wernicke’s aphasia (non-comprehension of speech)
Where do the vertebral aa. branch from?
subclavian aa.
What do the vertebral aa. pass through?
transverse foramina of the cervical vertebrae
enter the brain thru the foramen magnum
What do the vertebral aa. anastomose to form?
basilar a.
What supplies the ant. 2/3 of the cervical spinal cord?
anterior spinal a.
What supplies the medullary pyramids?
ant. spinal a.
What supplies the posterior 2/3 of the cervical spinal cord?
post. spinal aa.
What does the PCA supply?
midbrain
med. & inf. surfaces of the temporal and occipital lobes
thalamus and globus pallidus
What does the post. inf. cerebellar aa. (PICA) supply?
inf. surface of the cerebellum
lat. part of the rostral medulla
choroid plexus of the 4th ventricle
Posterior cerebral a.
Cortical branches to occipital lobe and medial aspect of temporal lobe
