The Blood-Brain Barrier (BBB) Physiology ​Definition: A highly selective semi-permeable border that prevents harmful solutes in the blood from non-selectively entering the CNS. ​Structure: Composed of tight junctions between endothelial cells of brain capillaries, supported by Astrocytes (glial cells). ​Function: It protects the brain from toxins and pathogens while allowing essential nutrients like glucose and oxygen to pass through via specific transporters. ​Nursing Point: Lipid-soluble substances (like alcohol and some anesthetics) cross the BBB easily, whereas most antibiotics require high doses or specialized delivery to treat brain infections like Meningitis. ​#Bexyhub #CareBexyhub #DeepakKumar #CEOBexyhub #NeuroAnatomy #📒 मेरी डायरी