The diagram shows a capillary network within a tissue - Scottish Highers Human Biology - Question 14 - 2022

In the context of capillary networks, pressure filtration refers to the movement of plasma from the capillaries into the surrounding tissue due to hydrostatic pressure differences. Typically, this process occurs at the arterial end of the capillaries, where the pressure is highest.

In the provided diagram, you should identify the arrow that points away from the capillary and into the tissue. Based on the labeling in the diagram, arrow B is the correct answer as it represents the direction of pressure filtration of plasma.