T or F-Aldosterone is a hormone that causes the renal tubules to reclaim sodium ions from the filtrate. true. it does that by enlargeing the tubules and reabsorbing more water and ions. T or F-Blood pressure in the renal glomerulus is lower than in most parts of the body in order to conserve body water. or F-Aldosterone is a hormone that causes the renal tubules to reclaim sodium ions from the filtrate. true. it does that by enlargeing the tubules and reabsorbing more water and ions. T or F-Blood pressure in the renal glomerulus is lower than in most parts of the body in order to conserve body water.