CNS I (anatomy review) Flashcards
the brain is supplied by two artery systems
- ICA system
- vertebro basilar system
ICA = internal carotid artery system
in the anterior surface of pons there are groove and artery (what is called and it’s origin)
basilar artery in basilar groove formed from two vertebral arteries
the two systems form two circulation
anterior circulation
ICAs, MCAs, & ACAs.
posterior circulation
VAs, BA, And two PCAs
arteries of circle of Willis
two vertebral a. give basilar a. which connect with two ICA by posterior comunicating a.
each ICA gives ACA
two ACA connect with each other by one anterior comunicating a
the two cerebral hemisphere are supplied by three main a
now just mention
from ICA
1. ACA
2. MCA
3. PCA
which area of brain is supplied by PCA
- occipital lobe.
- inferior surface of temporal lobe (except pole)
- lower 1 finger of lateral surface of temporal lobe.
and
midbrain, thalamus, choroid plexus, and part of the lateral and third ventricles
which area of brain is supplied by ACA
- medial surface of cerebrum
- upper 1 finger of lateral surface
** (except of area of PCA)**
which area of brain is supplied by MCA
the rest
the insula is supplied by
MCA
which branch of ica is commonly obstructed and why?
MCA, it’s the largest branch (continuation of ICA)
two hemispheres of brain is separated by
- a deep longitudinal fissure
- falx cerebri
- superior sagital sinus
when i give you axial section of the brain you should mention:
just try as much as you can
- lateral, 3rd, 4th ventricle
- corpus callosum (geno)
- internal capsule
- thalamus
- letiform nucleus
- codate nucleus
- cerebral peduncle, brain stem
- cerebellar peduncle, pons
- medulla oblongata
- insula
according to the level
