Glomerular Filtration

Question 1

Net Filtration Pressure

Answer 1

Combination of all forces that regulate how much plasma is filtered into the nephron. If net filtration is positive, plasma will be filtered into bowman’s space. If negative value, plasma will not filter out of glomerular capillaries into Bowman’s Space

Question 2

Hydrostatic pressure of Glomerular Capillaries

Answer 2

(PGC) pressure of blood flowing through glomerular capillaries

55mmHg

Pressure pushes outward works with colloid osmotic pressure of Bowman’s Capsule

Question 3

Colloid osmotic pressure of glomerular capillaries

Answer 3

piGC

pressure created due to prescence of protein.

Force pushes inward works with hydrostatic pressure of Bowman’s Capsule (PBC)

Question 4

Pressure of fluid already in Bowman’s Capsule, creates back pressure (PBC)

inward force that works with piGC glomerular capillaries colloid osmotic force

Answer 4

Hydrostatic pressure of Bowman’s capsule

Question 5

Net filtration pressure formula

Answer 5

Net filtration= (PGC+piBC) - (PBC+piGC)

Net filtration= (PGC - PBC - piGC)

Net filtration = 10 mm Hg

Question 6

Glomerular Filtration Rate (definition)

Answer 6

Amount of fluid/solutes filtered per unit time into Bowman’s space from the glomerular capillaries

Question 7

Influences on GFR