<prompt> Which of the following ors filtration at the aeriolar end of the capillary bed?Decrease in hydrostatic pressure of capillariesIncrease in hydrostatic pressure of capillariesIncrease in oncotic pressure of capillariesDecrease in oncotic pressure of interstitium  <response>: Starlings forces: The forces acting on the capillary to cause movement of fluid into or out of the capillary. Two forces that tend to move the fluid out of the capillary - Capillary hydrostatic pressure Interstitial colloid oncotic pressure. Two forces that tend to move the fluid back into the capillary - Plasma colloid oncotic pressure Interstitial hydrostatic pressure. At the aeriolar end of the capillary: The balance or net sum of these forces or the fluid to move out; thus fluid leaks out of the capillary at this end. At the venous end of the capillary: The balance or net sum of these forces is in the or of fluid movement back into the capillary. 