Killer whales are marine mammals belonging to the family Delphinidae, formed by several species of dolphins, false killer whales and pilot whales.
Active transport is the key to the reabsorptive processes in the proximal tubule. Glucose and amino acids are reabsorbed across the apical membrane of the proximal tubule by sodium-coupled secondary active transport. Na + glucose transport is mediated by the low affinity, high capacity SGLUT2 transport protein.
Once in the pelvis of the kidney the filtrate (now urine) contains substances that were pressure filtered and never reabsorbed such as urea, excess salt, water and other substances that were secreted from the blood such as hydrogen ions, drugs, or creatinine..REABSORPTION: Reabsorption, by definition, is the movement of substances out of the renal tubules back into the blood capillaries located around the tubules (called the peritubular copillaries). Substances reabsorbed are water, glucose and other nutrients, and sodium (Na+) and other ions.