1. Overview Of Nephron

Question 1

How much of the blood that enters the glomerulus ends up being filtered?

Answer 1

20%

Question 2

What is filtered in the glomerulus?

Answer 2

Water
Na+
Cl-
K+
HCO3-
Amino acids
Glucose
Creatinine
Urea

Question 3

What is reabsorbed in the proximal convoluted tubule?

Answer 3

K+
Na+ (67%)
Cl- (67%)
Amino acids (100%)
Glucose (100%)
HCO3- (90%)
Water (65%)

Question 4

What is secreted into the proximal convoluted tubule?

Answer 4

Uric acid

Organic acids

Question 5

What is reabsorbed in the descending limb of the loop of Henle?

Answer 5

Water (10%)

Question 6

What is absorbed in the ascending limb of the loop of Henle?

Answer 6

Na+ (25%)

Cl- (25%)

Question 7

What is rebosrbed in the distal convoluted tubule?

Answer 7

Na+ (5%)
Cl- (5%)
Water (~0%)

Question 8

What is the role of aldosterone in the distal convoluted tubule?

Answer 8

Reabsorption of Na+ and Cl-, therefore more water reabsorbed

Question 9

What is secreted into the distal convoluted tubule?

Answer 9

K+

H+

Question 10

What is reabsorbed from the collecting duct?

Answer 10

Urea
Na+ (3%)
Cl- (3%)
Water (~5%)

Question 11

What is the role of ADH in the collecting duct?

Answer 11

Causes water to be reabsorbed

Question 12

What is excreted from the kidney?

Answer 12

Water 
Na+ (<1%)
Cl-
HCO3-
Creatinine
Urea