21) Region of the distal tubule that monitors concentration of the filtrate.
A) vasa recta
B) collecting duct
C) macula densa
D) mesangial
E) extraglomerular
22) The descriptive term for the location of the kidneys relative to the abdominal cavity.
A) retroperitoneal
B) intraperitoneal
C) extraabdominal
D) supraperitoneal
E) subcapsular
23) Contraction of this muscle forces urine from the bladder.
A) cremaster
B) detrusor
C) diaphragm
D) vesicular
E) dartos
24) Ladderlike looping blood vessels within the medulla.
A) vasa vasorum
B) peritubular capillaries
C) cortical radiate
D) vasa recta
E) interlobular
25) Blood vessel that contains granular cells involved in blood pressure regulation.
A) afferent arteriole
B) efferent arteriole
C) segmental artery
D) macula densa
E) extraglomerular mesangial
26) Which of the following is
not
normally found in urine?
A) urea
B) glucose
C) uric acid
D) creatinine
27) If you looked closely at the tip of a renal papilla with a hand lens, the hundreds of little openings you would see on its surface are
A) minor calyces.
B) renal sinuses.
C) openings of papillary ducts.
D) glomeruli.
28) Vessels and nerves enter and leave the kidney through the
A) fibrous capsule.
B) lateral convex surface.
C) inferior surface.
D) medial hilum.
29) The most superficial layer of the kidney is the
A) cortex.
B) medulla.
C) renal pyramids.
D) renal papilla.
30) How much of the fluid filtered by the kidney actually becomes urine?
A) 1%
B) 10%
C) 50%
D) 99%