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When aldosterone is absent, Na+ reabsorption in the nephron is greatly reduced, and as 30-40g of sodium can be lost in the urine daily. The answer is decreased. Site: Anatomy and Physiology Eighth Edition by Seeley Stephens Tate.
These substances are water, glucose, amino acids, vitamins, bicarbonate ions, and the chloride salts of calcium, magnesium, sodium and potassium. Reabsorption starts in the proximal tubules and continues through the Henle's loop, to the distal tubule and then to the collecting tubules.bout 99% of the initial filtrate from the glomerulus is reabsorbed by the nephron and returned to the blood in the peritubular capillaries. o The number of nephrons does not increase after birth. Growth of the kidney is due to the enlargement of existing nephrons not due to an increase in their number.