brain - blood supply Flashcards
CNS neurons are very dependent on ___ metabolism
aerobic
brain weighs __% of body weight but uses __% of the total cardiac output and consumes ___% of total available oxygen
2
15
20
blood supply to the brain is supplies by the ___ and ___ arteries
ICA
vertebral
ICA is one of the two terminal branches of the ___ ____ artery
common carotid
ICA has 4 pars
cervical
petrous
cavernous
cerebral
the cerebral part of the ICA gives off the ___ a which supplies the eye
opthalmic
ICA terminates by dividing into ___ and ___ cerebral arteries
anterior
middle
ICA anastomoses with the vertebral artery through the ___ ___ ___
circle of willis
anterior cerebral artery is one of the two terminal branches of the ____
ICA
anterior cerebral a supplies the medial surface of the ___ and ___ lobes as well as the adjoining strip of cortex along the medial edge of the ___ surface of these lobes
frontal
parietal
lateral
anterior cerebral a supplies portions of the ___ capsul and ___ ganglia
internal
basal
anterior cerebral a supplies the anterior / of the corpus collosum
4/5
middle cerebral a supplies the ___ and the lateral surface of the ___, ___, and ___ lones as well as the posterior portion of the ___ capsule and ____ ganglia
insula frontal partietal temporal internal basal
2 vertebral arteries enter the ___ ___ and unite at the caudal end of the ___ to form the ___ artery
foramen magnum
pons
basilar
basilar artery ends by dividing into the ___ ___ arteries at the superior end of the pons
posterior cerebral
basilar gives off 4 branches
superior cerebellar
pontine
labyrinthine
ant inf cerebrellar
post cerebral aa are the 2 terminal branches of the ___ a
basilar
post cerebral gives rise to 2 branches
brainstem
cortical
brainstem branch of the post cerebral a are named according to ___ __ ___
where they are
cortical branches of the post cerebral a arise as the PCA courses along he inferiomedial surface of the ___ lobe to reach the ___ lobe. supplies the ____
temporal
occipital
hippocampus
circle of willis is formed by the anastomosis of 5 aa
PCA post communicating ICA ant cerebral ant communicating
circle of willis is located at the base of the ___, encircling the ___ ___, infundibulum of the ____ gland, and the ___ bodies
brain
optic chiasma
pituitary gland
mamillary bodies
veins of the brain lie in the ___ space and pierce the ___ mater and memingeal layer of the ___ mater to drain into the ___ ___ ___
subarachnoid
arachnoid
dura
dural venous sinuses
epidural hematoma
build up of blood between the dura and the skull
subdural hematoma
blood accumulates between the dura and the arachnoid
subarachnoid hemorrahage
bleeding in the subarachnoid space (between the arachnoid and pia mater)
