Hypothetical Amounts of various substances in different regions of the nephronal
ID: 68901 • Letter: H
Question
Hypothetical Amounts of various substances in different regions of the nephronal
system of the human kidney, blood vessels leaving the nephron and urine excreted.
Location of Substance and Amount of Substance
Substance
Glomerular Capillaries
Bowman’s Capsule
PCT
Proximal Tubule
DCT
Distal Tubule
Urine Excreted
Blood returned to body
Water
100
40
45
20
25
75
Protein
100
0
0
0
0
100
Glucose
100
40
40
0
0
100
Potassium
100
23
21
5
12
88
Sodium
100
30
25
3
6
94
H+ Ions
100
25
30
45
50
50
Urea
100
50
50
75
90
10
KEY A. Filtration
B. Reabsorption
C. Secretion
________ The movement of potassium into Bowman’s capsule from the glomerular capillaries is an example of this process.
________ Compare the amount of water in the distal tubule to the amount of water excreted in the urine.This change is an example of what process?
________ Compare the amount of H+ ions in the distal tubule to the amount of H+ excreted in the urine. This change is an example of what process?
________ Compare the amount of H+ ions in the proximal tubule to the amount found in the distal tubule.This change is an example of what process?
________ Compare the amount of protein in Bowman’s capsule to the amount found in the glomerular capillaries.This is an example of what?
Location of Substance and Amount of Substance
Substance
Glomerular Capillaries
Bowman’s Capsule
PCT
Proximal Tubule
DCT
Distal Tubule
Urine Excreted
Blood returned to body
Water
100
40
45
20
25
75
Protein
100
0
0
0
0
100
Glucose
100
40
40
0
0
100
Potassium
100
23
21
5
12
88
Sodium
100
30
25
3
6
94
H+ Ions
100
25
30
45
50
50
Urea
100
50
50
75
90
10
Explanation / Answer
The movement of potassium into Bowman’s capsule from the glomerular capillaries is an example of this process Reabsorption.
Compare the amount of water in the distal tubule to the amount of water excreted in the urine.This change is an example of what process. Secretion
Compare the amount of H+ ions in the distal tubule to the amount of H+ excreted in the urine. This change is an example of what process. Secretion
Compare the amount of H+ ions in the proximal tubule to the amount found in the distal tubule.This change is an example of what process Filtration.
Compare the amount of protein in Bowman’s capsule to the amount found in the glomerular capillaries.This is an example of what. Reabsorption
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