6 Blood Supply to the Brain Flashcards
There are 3 cerebellar arteries. What are their names and what structure do they pass over and supply on their way to the cerebellum?
Run over surface of midbrain and supply it:
An occlusion in which of the arteries in the following diagram may cause somatosensory symptoms?
Thalamoperforating arteries
Which artery is most commonly involved in stroke?
Middle cerebral (because it’s big)
Fill in the missing labels:
What do the pontine arteries supply? What is locked in syndrome?
Locked-in syndrome (LIS), also known as pseudocoma, is a condition in which a patient is aware but cannot move or communicate verbally due to complete paralysis of nearly all voluntary muscles in the body except for vertical eye movements and blinking
Why can’t we rely of the circle of willis (to continue blood supply) in the event of an occlusion?
Circle of willis= highly variable person to person
Where does the anterior spinal artery supply?
Anterior 2/3 of the spine
It is possible to infarct the spinal cord
The following image shows the areas supplied by each of the 3 cerebral arteries. How is this useful when trying to localise a lesion?
Think homunculus
Fill in the missing labels: Anterior blood supply to brain
Fill in the missing labels: Posterior blood supply to brain
Basilar artery= midline vessel formed from confluence of vertebral arteries
Name the important grey matter structures supplied by the deep branches (lenticulostriate arteries) of the middle cerebral artery.
- Lentiform nucleus (putamen and globus pallidus)
- Caudate nucleus
- Internal capsule
What structure do the anterior cerebral arteries loop over to supply the cortex?
Loop over corpus callosum
