There's an interesting organ, the uinary bladder. That arm has a cell cord or selsition transitional. When the bladder is empty, they are probably more cuboidal or columna shaped. But as the bladder fills in, stretches and stretches and stretches, it changes the morphology into aquams more yer. A e can also have s an n interest inside. One is what we call a pseudo stratified t say. And that looks like it should be stratified, but it's the way that the cells are actually are positioned that they theye kind of squashed in different ways.