Glomerular filtration: shown is the bowmans capsule (yellow) and the glomerulus (red). This structure serves as a filtration mechanism before reaching the proximal convoluted tubule of the nephron. In order to pass, fluids must go through 3 layers: the fenestrated endothelium, the basement membrane, and filtration slits. Based upon size, molecules greater than 8nm are too large to pass. Therefore only molecules such as glucose, water, electrolytes, amino acids, nitrogenous waste can pass.
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