Biology 1201A Lecture Notes - Lecture 31: Arteriole, Sympathetic Nervous System, Renal Artery Stenosis

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This maintains necessary pressure: the glomerulus is surrounded by a structure called the bowman"s capsule, which has many cells called podacytes, when blood enters the glomerulus, about a fifth of it goes into the. This fluid is the filtrate, & contains things that are easily dissolved (ex: na+, glucose, amino acids, etc. ). Things that do not dissolve easily (ex: rbcs) aren"t filtered into bowman"s space: bowman"s capsule is sort of the beginning of the nephron. From there, the filtrate enters the proximal tubule (this has a convoluted part, then becomes straight), where important nutrients are reabsorbed. This is where more nutrients (& a bit more water) are reabsorbed: after going through the distal tubule, our filtrate has been processed. A lot of the water has been taken out / reabsorbed (so the filtrate is more concentrated), and we"ve reabsorbed the nutrients we don"t want to lose. This ensures that the body"s physiological processes continue operating effectively.

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