151.L1.Lect7.Kidney.11.22.13.Stu

Filtered amt excreted out of blood in form of urine

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Unformatted text preview: n Substance Amt. filtered Amt. excreted out of blood in form of urine Water (L) 99 (blood) (blood) 180 1.8 Na+ (g; salt) 580 99.5 (blood) 99.5 (blood) 4 Urea (g) 50 (kidney) (kidney) 56 28 Glucose (g) 180 100 (blood) 100 (blood) 0 % re-absorbed Lecture 7 – Kidney, excretion of urea Lecture Nephron is the functional unit within the kidney (~1 million per kidney) Juxtamedullary nephron: our focus [diagram] [diagram] Kidney structure Kidney function Glomerulus Filtration: urea, fluid, nutrients out of Filtration: urea blood Refinement Proximal tubule Secretion: drugs, toxins specifically transported from blood to filtrate (omit) Re-absorption: water, salt, nutrients Loop of Henle Re-absorption: water (1st), salt (2nd) Re-absorption: water Distal tubule Re-absorption: water (ADH-controlled), salt Re-absorption: water Collecting duct Re-absorption: water (ADH-controlled), salt, Re-absorption: urea urea Lecture 7 - Kidney Lecture Campbell Figure 44.14 Campbell Figure 44.14 1 million nephrons per kidney - 5% are juxtamedullary nephrons nephrons - responsible for most extreme re-absorption of salt (NaCl) and water (c) Juxtamedullary nephron Campbell Figure 44.14 Campbe...
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