11-17-2007, 01:59 AM
Concerning the measurement of renal plasma flow (RPF) and glomerular filtration rate(GFR):
A. inulin is a good GFR marker because it is freely filtered in the glomeruli and it is not reabsorbed, or secreted, by the renal tubules
B. inulin concentration in the proximal tubule's lumen increases progressively as water is reabsorbed in the segment of the nephron
C. PAH (para-amino-hippuric acid)is a good marker of renal plasma flow because it is freely filtered and is rapidly secreted by the proximal tubule; as a result very little PAH reaches the renal vein
D. A and C are correct
E. all are correct
A. inulin is a good GFR marker because it is freely filtered in the glomeruli and it is not reabsorbed, or secreted, by the renal tubules
B. inulin concentration in the proximal tubule's lumen increases progressively as water is reabsorbed in the segment of the nephron
C. PAH (para-amino-hippuric acid)is a good marker of renal plasma flow because it is freely filtered and is rapidly secreted by the proximal tubule; as a result very little PAH reaches the renal vein
D. A and C are correct
E. all are correct