Form and Function

A belated posting of my muddiest point from last week's class on Tuesday. I actually shared confusion on the same question that was raised in class on filtration as a form on passive diffusion. I'm pretty sure I got it cleared up with the drawing that went on the board. A fluid can be moved through a membrane at the location where the vessel that holds it moves from a smaller to a larger diameter because of the increased pressure applied to the fluid in the narrower portion of the tube. If that's not correct then I'm still muddied...