s4.1 - blood supply to the brain

Question 1

draw and label the circle of willis

try to add what each area supplies !

Answer 1

check vs notes

Question 2

what does the ACA,MCA(also give key branch) and PCA each supply

Answer 2

mca -
 Cortical branches emerge from the lateral fissure to supply the lateral aspect of the cerebral hemisphere, including lateral parts of the frontal and parietal lobes as wellas the superior temporal lobe

Deep branches (the lenticulostriate arteries) supply deep grey matter structures including the lentiform nucleus and caudate as well as theinternal capsule

Aca -
The vessels loop over the corpus callosum and send branches to the adjacent cortex
Cortical branches supply the medial aspect of the frontal and parietal lobes (not the occipital lobe)
There are also branches to the corpus callosum itself

PCA - Terminal bifurcation of basilar artery gives rise to the posterior cerebral artery
o Supplies occipital lobe, inferior temporal lobe and
thalamus (via thalamoperforator and
thalamogeniculate branches)

Question 3

SCA,PICA,AICA (cerebelar arteries) - what do the supply

also think en passe

Answer 3

they supply the cerebellum, and en passe the midbrain, pons and medulla en passe respectivley

Question 4

what are the two branches of the vertebral artery ? what do they supply ?

Answer 4

the anterior spinal arterys - which supply the top 2/3 of the spinal cord

and PICA