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Published on Apr 10, 2009
A small quickcam video of the physiology of glomerular filtration rate. The reasons to control GFR and the consequences of lack of control are discussed in Part 1. The major pressures involved, including hydrostatic pressures as well as osmotic pressure are discussed in Part 2. In Part 3, GFR control mechanisms are discussed including myogenic control of the afferent arteriole, juxtaglomerular cells, macula densa cells as well as external control via the sympathetic nervous system.