4- Cerebral Circulation Flashcards
Which main arteries feed the anterior and posterior circulation of the brain?
Anterior: internal carotid arteries
Posterior: vertebral arteries
Which midline vessel is formed by the confluence of the vertebral arteries?
Basilar artery
Where in the brain does the anterior circulation supply?
Most of the cerebral hemispheres
Which parts of the brain are supplied by the posterior circulation?
Cerebellum, brain stem, some of temporal and occipital lobes
Which artery is the direct continuation of the internal carotid artery?
Middle cerebral artery
Where do the cortical branches of the middle cerebral artery supply?
The lateral aspect of cerebral hemisphere- cortex and underlying white matter (lateral parts of frontal and parietal lobes, superior part of temporal)
Where do the cortical branches of the middle cerebral artery emerge?
Lateral fissure
What are the numerous small branches of the middle cerebral artery called?
Lenticulostriate arteries
Which deep grey matter structures do the lenticulostriate arteries supply?
Internal capsule, lentiform nucleus, caudate nucleus
Which artery connects the left and right anterior cerebral arteries?
Anterior communicating artery
Which artery loops over the corpus callosum and supplies it?
Anterior cerebral artery
Where do the cortical branches of the anterior cerebral artery supply?
Medial aspect of frontal and parietal lobes, most anterior region of frontal lobe
Terminal bifurcation of the basilar artery gives rise to which arteries?
Left and right posterior cerebral arteries
Where do the posterior cerebral arteries supply?
Occipital lobe, inferior temporal lobe, thalamus and the midbrain as it passes over it
What branches of the basilar artery supply the cerebellum?
Superior cerebellar and anterior inferior cerebellar arteries
