8.1: Arterial Supply To The Brain Flashcards
The two vertebral arteries converge to form which artery?
Basilar artery
The basilar artery bifurcates to form which arteries?
Posterior cerebral arteries
The internal carotid arteries ascend through which anatomical landmark in the brain?
Carotid canal
What are the small branches that come of the basilar arteries laterally?
Pontine arteries
What comes off the vertebral arteries before it converges to the basilar artery?
Posterior inferior cerebellar arteries
What does the middle cerebral artery mainly supply?
Lateral aspect of brain, parietal lobe and part of frontal lobe
(Where motor and sensory cortexes are!)
Where does the anterior cerebral artery supply?
Most medial aspects of the cortex, in the midline
And anterior pole of frontal lobe
Which cerebral artery runs over the corpus callosum?
Anterior cerebral artery
Which lobe/s does the posterior cerebral artery supply?
Occipital lobe
Inferior part of temporal lobe
Th midbrain is mainly supplied by which cerebral artery?
Posterior cerebral artery
Which cerebral arteries supply the medial and lateral parts of the motor homonculus?
Anterior cerebral supplies medial part, so lower limb hence aka ‘artery of the leg’
Middle cerebral supplies upper limb of the motor homonculus
Which tracts does the pontine arteries supply?
Corticospinal tracts
Hence blockage can lead to locked in syndrome
The lenticulostriate arteries branch off which artery?
Middle cerebral artery
A pure sensory stroke would be due to an infarct where?
In a lenticulostriate artery supplying the thalamus
A lacunar stroke affecting the internal capsule would cause what?
Pure motor stroke
