Urine Formation

Question 1

Name the three main processes of urine formation

Answer 1

Glomerular filtration
Tubular reabsorption
,, secretion

Question 2

How much blood is filtered by kidneys per minute?
It is how much blood pumped out by kidneys each ventricle in a minute

Answer 2

1100-1200ml

1/5 th

Question 3

Filtration membrane is made up of?

Answer 3

1.Endothelium of glomerular bloodvessel
2.Epithelium of bowman’s capsule
3.Basement membrane between these two layers

Question 4

Epithelium of bowman’s capsule is called…….

Answer 4

Podocytes

Question 5

How filtration slits are formed?

Answer 5

By the arrangement of podocytes in a intricate manner

Question 6

What is the value of GFR?

Answer 6

125ml/min or 180l/day

Question 7

Which molecules do not pass the filtration membrane

Answer 7

Protein

Question 8

How much urine is formed per day?

Answer 8

1.5L

Question 9

How much filtrare is reabsorbed?

Answer 9

99%

Question 10

Which substances are reabsorbed actively?

Answer 10

Glucose,amino acid,Na+,vit. C

Question 11

Which substances are reabsorbed passively?

Answer 11

H2O(initially),N2 wastes

Question 12

What is the only mode of excretion in animals which do not have glomeruli like desert amphibians,marine fish

Answer 12

Tubular secretion

Question 13

Importance of tubular secretion

Answer 13

Maintenance of ion and acid base balance in body fluid