Blood Brain Barrier | Part 1
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- čas přidán 13. 10. 2015
- #bloodbrainbarrier #bloodbrain #bloodsupply #drnajeeblectures #medicaleducation
Blood Brain Barrier | Part 1
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▬▬▬▬▬▬▬▬▬▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
The blood-brain barrier (BBB) is a selective semi-permeable membrane between the blood and the interstitium of the brain, allowing cerebral blood vessels to regulate molecule and ion movement between the blood and the brain. The BBB is composed of endothelial cells (ECs), pericytes (PCs), capillary basement membrane, and astrocyte end-feet, all of which aim to shield the brain from toxic substances, filter harmful compounds from the brain to the bloodstream, and supply brain tissue with nutrients. To do this, the BBB has physical (tight junctions) and metabolic (enzyme) barriers. Central nervous system (CNS) structures are unique in structure and function and therefore require a stable environment with a composition that differs from that of the peripheral circulation. For this reason, the BBB exists to maintain a homeostatic environment in which CNS structures can function without disruption from other bodily functions.
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Blood brain barrier
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Neurona was once exhausted by the struggle of searching for true love, so she went to see her wiser friend Neuroma for advice.
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Neuroma: Be patient little sister, and know that your task is not to seek for love, but merely to seek and find all the barriers that you have built against it. The truth is that what you seek is also seeking you.
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