Stroke Anatomy Flashcards
Another term for circle of Willis
A nas to mot ic ring
What is the pathway for posterior circulation?
Heart Aorta Subclavian Vertebral Fora min a in transverse process Foramen magmus
What is the advantage of having a circle of Willis
It allows us to have several different ways to getting to the same place
Allows for backup plans if there is a traffic jam
More collateral flow
How many people actually have a complete circle of Willis
25 percent
Where does the basal start at the
Base of pins
What branch provides the retina
Ophthalmic. 1st off int. Carotid
Describe petrous seg of int carotid
Horizonyal
Rocks are flat
Describe cavernous seg of internal
Cavers have snakes
Describe cervical segment of int.
Vertical
What part of internal seg is in the subarachnoid space
Supraclinoidinternal cranial segment
What does ACA supply
Medial pfc to ant parietal (med sensory cx)
How many branches off the mca?
Usually two.
But there can be up to 4
What does the pca supply
Entire occipital
Medial temporal
Inferior temporal
What does the lenticu lo striate supply
Basal ganglia
Internal capsule
What supplies the internal capsule
Lenticulostriate
What does the ant choroidal Artery supply
Gp
Thal
Post limb of internal capsule
What artery supplies recurrent artery of heubner
Anterior cerebellar artery
What does the artery of he inner supply
Head of caudate
Anterior pu ra men
Globus pallidus
Internal capsules
What perforating branches come off pca
Thalamoperforator arteries
What are the three mca branches
Superior div
Inferior
Deep territory
What do you call it when all three mca branches are involved
Stem infarct
What do you call sensory and motor deficit
Sensorimotor loss
Typical TIA last
10 min
What are causes alien hand
Supplimental cortex ACA
What causes alexia without agraphia
Spenium corpus collasum
What region causestranscotical aphasia
Left aca
Water shed
