Questions:
Excretory System: multiple choice
1) How many nephrons are contained in each kidney?
about 100
about 1000
less than 100
about a million
2) Which of the following contains the least concentration of glucose
plasma
nephric filtrate
urine
3) What percentage of the glucose in the filtrate is reabsorbed in the nephron?
0%
20%
50%
100%
4) What part of the nephron is located between the proximal convoluted tubule and the distal convoluted tubule?
medial convoluted tubule
loop of Henle
collecting tubule
glomerulus
5) What triggers the release of ADH from the posterior pituitary?
Aldosterone
ADH releasing factor
blood osmotic pressure
hematopoieten
6) When the pH of the blood begins to drop, how do the kidneys react?
they secrete more hydrogen ions
they conserve hydrogen ions
they secrete hydroxide ions
they conserve water
7) By what process does an artifical kidney work?
filtration
phagocytosis
dialysis
hemolysis