1) Which part of the nephron is most active in secretion and reabsorption? 2) Look at the figure above, H' is and HCO, is a) reabsorbed; secreted b) secreted; reabsorbed 3) Afferent vasodilation GFR. a) increase b) decrease 4) Tubular is moving molecules out of the blood into the nephron tubule and tubular is moving molecules back into the blood from the nephron tubule. a) secretion; reabsorption b) reabsorption; secretion 5) When GFR increase; urine output and blood pressure usually. a) increase; decrease b) decrease; increase 6) A patient with high blood urea and nitrogenous waste and high blood creatine levels usually have_ EGFR and_ renal failure a) high: high b) low; low c) low; high d) high; low 23-7