The brain Flashcards
Central suclus
most promininent divide going laterally on the brain
makes easier for us to determined precentral and post central gyrus
longitudinal fissure
divides L and R hemisphere
4 main parts of brain
brain stem, cerebellum, diencephalon, and cerebrum
brain stem
continuous with SC and consists of:
midbrain
pons
medulla
cerebellum
posterior to brain stem
responsible for fine precise motor actions
diencephalon
superior to brain stem:
thalamus
hypothalamus
epithalamus
cerebrum
supported by diencaphalon and brain stem - largest part of brain
whole area with all the gyri and sulci
3 coverings of brain
dura mater
arachnoid mater
pia mater
dura mater 2 layers and location
periosteal layer
meningeal layer
fused together except when close the dural venous sinus, only 1 dural layer in SC
arachnoid layer
2nd layer
spiderlike projections
create subarachnoid space which will be filled with fluid
pia mater
innermost intimate later
shiny layer
vasculature
3 extensions of dura mater
FALX CEREBRI
TENTORIUM CEREBRI
FALX CEREBELLI
falx cerebri
sickle shaped - separates 2 hemispheres of cerebrum - going anterior to posterior and it will hit cerebellum where it fans out laterally to create tentorium cerebri
sit in longitudinal fissure
hold major sinus which drains CSF
tentorium cerebri
separating cerebral from cerebelum
felx cerebelli
c-shaped but sit back of cerebellum
