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Cerebrovas System Ob

QuestionAnswer
What arteries make up the internal carotid system, and what general parts of the brain does it supply? internal carotid a., posterior communicating a., middle cerebral a (M1 & M2 segments of middle cerebral a.) lenticulostriate aa., anterior cerebral a., anterior communicating a.
What arteries make up the vertebrobasilar system, and what general parts of the brain does it supply? vertebral a., posterior spinal a., anterior spinal a, posterior inferior cerebellar a., basilar a., anterior inferior cerebellar a., pontine aa., superior cerebellar a., posterior cerebral a.
Identify by name the major cortical branches and be able to indicate the areas of the cerebral cortex that each supplies. anterior cerebral a, middle cerebral a, posterior cerebral a
Describe the origin of the major arteries that supply the spinal cord. Indicate in spinal cord cross section the regions of the cord supplied by its arteries. anterior spinal artery, posterior spinal aa
Describe the cellular anatomy and function of the blood-brain barrier and the blood-CSF barrier. Be sure to be able to say how these two barriers are similar and how they are different physiologic barrier between intravascular space & CNS ECF, astrocytes have end feet that release chemical signals to make ENDOTHELIAL CELLs not leaky (tight junction), small molecules, gases, substances with specific transporters, lipid soluble substances
Describe intracranial bleeding in terms of real and potential spaces. epidural bleed vs subdural bleed, herniations
posterior communicating a. connects internal carotid a. with vertebral basilar system
internal carotid a ( most of the anterior potion of the cerebrum)
posterior communicating a connects internal carotid a. with vertebral basilar system
middle cerebral a lateral surface cerebral hemispheres to parieto-occipital sulcus; rostromedial temporal lobe; insular cortex M1 & M2 segments of middle cerebral a.
lenticuostriate aa (diencephalon, internal capsule, basal nuclei)
anterior cerebral a medial surface cerebral hemispheres to parieto-occipital sulcus
anterior communicating a. (distributes blood to portions of the ventromedial frontal lobes (including parts of the orbitofrontal lobes) and related structures)
vertebral a (supplying component of the vertebrobasilar vascular system, supply blood to the upper spinal cord, brainstem, cerebellum, and posterior part of brain)
posterior spinal a posterior spinal cord
anterior spinal a anterior spinal cord, grey matter, central branches
posterior inferior cerebellar a medulla, cerebellum
basilar ( cerebellum, brainstem, and occipital lobes)
anterior inferior cerebellar a pons, cerebellum
pontine aa (pons)
superior cerebellar a midbrain, cerebellum
posterior cerebral a inferior & medial surfaces of temporal, occipital lobes to parieto-occipital sulcus
cerebral arterial circle cortical branches 3 pairs, also known as circle of willis
the blood brain barrier physiologic barrier between intravascular space (blood inside vessles) and CNS ECF, we don't want blood to have free access, found in brain and spinal cord
why do we have the BBB not everying in blood is good for neurons, protects
endothelial cells (endothelium) single layer of cells, capillaries are leaky allowing for good stuff to go to cells and bad stuff gets carried away
astrocyte end feet attaches astrocytes to endothelia cells, induce formation of tight junction, chemical signals make the endothelia cells not leaky and tight
astrocyte kind of glial cell, custodial cell
Created by: eew888
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