Digestive system










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UTTRAKHAND SLOVE PAPER 2018

  LS -91 BIOLOGY 2018 Q-1. In majority of nephrons, the loop of Henle is too short and extends only very little into the medulla. Such nephrons are called as cortical nephrons. In some of the nephrons, the loop of Henle is very long and runs deep into the medulla. These nephrons are called as juxtamedullary nephrons. Kangaroo rats. It is a U-shaped . Q-2 The proximal tubule also completes the reabsorption of glucose, amino acids, and important anions, including phosphate and citrate, because it is the sole site of transport of these filtered solutes. In addition to solute reabsorption and secretion, the proximal tubule is also a metabolic organ The principal function of the loop of Henle is in the recovery of water and sodium chloride from urine. This function allows production of urine that is far more concentrated than blood, limiting the amount of water needed as intake for survival. Collecting ducts are the last opportunity to resorb H2O and concentrate urine before they...
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