01:830:310 Lecture Notes - Lecture 5: Circumventricular Organs, Paraplegia, Area Postrema
28 Mar 2018
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Document Summary
Blood supply & blood brain barrier: what cerebral arteries supply the frontal, parietal, temporal and occipital lobes with blood (you don"t need to know this by surface, just which one or two for each lobe) Frontal lobe: (lateral surface) middle cerebral artery (medial surface) anterior cerebral artery (inferior surface) middle & anterior cerebral artery. Temporal lobe: (lateral surface) middle cerebral artery (medial surface) middle and posterior cerebral arteries (inferior surface) posterior cerebral artery. Parietal lobe: (lateral surface) middle cerebral artery (medial surface) anterior cerebral artery. Endothelial cells: have tight junctions that prevent toxins from going in between. Astrocyte feet : they cover endothelial cells, serves as extra layer of protection and limits what kind of molecules cross through the bbb certain medications. Small uncharged molecules can pass through the bbb. Circumventricular organs: cvo"s include subfornic organ sfo and vascular organs of. Area postrema: measures toxins and makes you vomit based on toxin over dose.
