Renal: Urine formation

Question 1

Enumerate steps of urine formation

Answer 1

1. Glomerular Filtration
2. Tubular reabsorption
3. Tubular Secretion

Question 2

Describe Globular filtration

Answer 2

Occurs from Glomerular Capillaries Into Bowman’s Capsule
* Fluid is free of Proteins (colloid)

Question 3

Describe tubular Reabsorption

Answer 3

Transfer of water & solutes from Tubular lumen (filtrate of glomerular Filtration) Back into blood (into peritubular Capillaries)

Question 4

Describe Tubular Secretion

Answer 4

Transfer of Solutes from peritubular Capillaries into Tubular Lumen

Question 5

Equation of Urinary Excretion

Answer 5

Filtration rate - Reabsorption rate + Secretion rate