<prompt> When capillary and interstitial hydrostatic pressures are 30 mm Hg and 10 mm Hg, respectively, and colloid oncotic pressure in capillaries and in interstitium are 22 mm Hg and 5 mm Hg, respectively, how much is the net filtration pressure?3 mm Hg- 3 mm Hg13 mm Hg- 13 mm Hg  <response>: Forces oring filtration out of the capillaries 1 Capillary hydrostatic pressure 30 mm Hg 2 Interstitial fluid colloid oncotic pressure 5 mm Hg. Thus, total force that ors filtration 30 5 35 mm Hg. Forces that pull the fluid back into the capillaries 1 Plasma colloid oncotic pressure 22 mm Hg 2 Interstitial fluid hydrostatic pressure 10 mm Hg. Thus, total force that opposes filtration 22 10 32 mm Hg. Hence, net filtration pressure 35 - 33 3 mm Hg. 