1 The urinary system does all of the following, EXCEPT it A secretes excess glucose molecules B regulates blood volume C contributesto stabilizing blood pH D eliminates organic waste products E regulates plasma concentrations of electrolytes 2 Conical structuresthat are located in the renal medulla are called A pyramids B renal columns C renal pelvises D nephrons E calyces 3 The region known asthe macula densa is part of A the proximal convoluted tubule B the distal convoluted tubule C the collecting duct D the ascending loop of Henle E Bowman’s capsule 4 The cells of the macula densa and the juxtaglomerular cellsform the A renal corpuscle B filtration membrane C loop of Henle D juxtaglomerular apparatus E afferent arteriole 5 A glomerulus is A the expanded end of a nephron B a knot of capillaries that lies within the renal corpuscle C the portion of the nephron closest to the renal corpuscle D the portion of the nephron that attachesto the collecting duct E the horseshoe-shaped segment of the nephron 6 The following is a list of the blood vesselsthat carry blood to the kidney. 1. afferent arteriole 2. arcuate artery 3. interlobar artery 4. renal artery 5. glomerulus 6. interlobular artery 7. efferent arteriole 8. peritubular capillary The proper order in which blood passesthrough these vesselsis A 4, 6, 2, 3, 1, 5, 7, 8 B 4, 3, 2, 6, 1, 5, 7, 8 C 4, 3, 2, 6, 7, 5, 1, 8 D 4, 6, 2, 3, 7, 5, 1, 8 E 4, 3, 6, 2, 1, 5, 7, 8