note1 - Nueroscience Brain uses 50 of oxygen in the body o...

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Nueroscience 01/24/2011 Brain uses 50% of oxygen in the body o Shuts down to save from cell death About 100 billion neurons in the adult human brain o 100 trillion connections in the brain Highly arborized connections Linear processing in retinal nerves Small world hypothesis in the brain o Some areas not as well/strongly connected as other areas o Conserve energy? Myelination takes a lot of energy Cell types o Oligodendrocytes Myelin sheaths/lipid membranes Holds signal within neuron o Helps info travel o Ependymal cells Circulates brain fluid Ciliated in the ventricle sides of the brain Beats back and forth to create circulation Transport nutrients thru brain separate from blood vessels o Microglia Immune cells of brain Macrophages Clean up cell debris inside brain o Astrocytes Blood/brain barrier Tight junctions in the brain Pericellular circulation GluT transporters Patella tendon reflex o
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