16. A human nephron
A. is one of the two kidneys
B. is the functional excretory unit
C. is about the size of your fist
D. all of the above |
17. The proximal convoluted tubule
A. is lined by microvilli
B. excrete salt ions of sodium and potassium
C. secretes unneeded proteins
D. absorbs organic acids |
18. Urine entering the collecting duct
A. will have salt added as it descends
B. will have urea added as it descends
C. will have water added as it descends
D. none of the above |
19. The multiplier effect
A. increases the salt concentration of the cortex
B. decreases the salt concentration of the urine
C. is due to the absorption of salt into the urine
D. none of the above |
20. Alcohol and caffeine increase urine volume by
A. decreasing blood pressure and increasing ADH production
B. increasing blood pressure and decreasing ADH production
C. increasing blood pressure and increasing ADH production
D. decreasing blood pressure and decreasing ADH production
