So the other function of our Thai junction is to control the movement of molecules and ions such as water and sugar molecules by only allowing a limited quantity to get into the cell on the apical side and out of the cell on the basil lateral side. This means that if a molecule, such as a water molecule wants to actually get into the cell, it cannot move around the cell because of these tie junctions and it must actually pass through the membrane via the process of passive diffusion. Now, where exactly are these tight junctions found? Well, these junctions are found in epithelial tissues such as lungs, bladder, intestines, stomach and organs. So these are the different types of organs that contain epithelial tissue that are basically connected via tight junctions. Now let's move on to the second type of intracellular junction known as our gap junction.