ANSC 3080 Lecture Notes - Lecture 22: Osmosis, Lysosome, Collecting Duct System
27 Mar 2018
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Document Summary
Glomerular filtration = bulk movements (water + dissolved substances) tubular fluid composition close to a protein free plasma. In the tubule, fluid will be transformed into urine. Reabsorption: water and dissolved substance from tubular lumen to peritubular capillaries (blood compartment) Secretion: substances transported from the peritubular capillaries to the tubular lumen (move to urine compartment) Water = cannot afford to loss = need to maintain the volume. The water excreted should be the same as the amount the horse consumed either drink or from feed. Glucose is very important for the body, everything is reabsorbed. If we find glucose in the urine = kidney unable to reabsorb or exceeding capacity for reabsorption. Urea is important but can be toxic if accumulated. Transporters specifically designed for the molecules they transport. Atp (energy) is used to transport a substance against the concentration gradients.
