<prompt> Glucose is primarily absorbed fromProximal convoluted tubuleDistal convoluted tubuleCortical collecting ductMedullary collecting duct  <response>: Important educational points60-70 of glomerular filtrate is reabsorbed in the proximal tubule.Na reabsorption occurs in all segments of nephron excepting descending limb of the loop of Henle. 60 60- 70 of filtered Na is reabsorbed in the proximal tubule. About 30 of filtered Na is reabsorbed in the thick ascending limb of the loop of Henle. About 7 of filtered Na is reabsorbed in early distal tubules and about 3 of filtered sodium is reabsorbed in late distal tubule and collecting duct.About 65 60-70 of water is reabsorbed in the proximal tubule and about 15 of water is reabsorbed in the thin descending limb. Remaining 20 of water enters the distal tubules and is absorbed from distal tubule and collecting duct according to the homeostatic requirements of the body, under the control of ADH.All substances Na , K , HCO3, Cl-, Phosphate, Protein, Glucose, water are maximally absorbed in the proximal tubule.Glucose and amino acids are completely absorbed from proximal tubules along with Na as secondary active transport cotransport symport.H is not absorbed by nephrons anywhere it is only secreted in the proximal tubule, late distal tubule and cortical collecting tubules. Substances which are both secreted and reabsorbed are K , uric acid and creatinine.On a normal diet, maximum solutes are reabsorbed almost completely: Glucose: 100, Aminoacids 100, HCO3-: 100. Water: 99.4, Na : 99.4, Cl-: 99.2, Uric acid : 98, K : 93.3, Urea : 53, and Total solutes : 98.9Amount secreted per day of different filtered contents are : Na : 150 mEqd, K : 90 mEqd, Cl - : 150 mEqd, Glucose: 0, Amino acid: 0, HCO3 : 0, Uric acid: 5 mmold. Creatinine: 12 mmold, Urea: 410 mmold, Water: 1-1.5 Ld; and total solutes : 700 mOsmd 