 And this short video we're just going to learn how to classify epithelial tissues. So you see they're going to be classified in two ways by the shape of the cells and the number of cell layers. So on the left hand side we see squamous, cuboidal, and columnar. On the top we see simple and stratified. So squamous cells I think they look like fried eggs so it's going to be flattened round cells. Cuboidal cells like the name implies are going to be shaped like a cube. And columnar cells also like the name implies are going to be long columns or rectangles. And then we see simple versus stratified. So a simple type of epithelium is going to be a single layer of cells. Stratified is going to be two or more layers, usually quite a few. So here's how I think of them. Simple, think absorption and secretion. They're thin, they're delicate, but they allow things to move in and out pretty easily. So simple I always think absorption and secretion first. Stratified are going to be thick so they're going to be tougher so think protection. Now of course simple columnar epithelium are going to offer some protection because they're still pretty thick. Generally speaking when I hear hooves I think horses. So simple, think absorption and secretion, stratified think protection. So then we see so simple squamous would be a single layer of these fried egg looking cells, stratified squamous, multiple layers of those cells all the way down the line. You see here this pseudo stratified in the lower right hand corner. So pseudo means false or fake. So pseudo stratified epithelium look stratified because the nuclei are staggered. But every one of those cells is touching the basement membrane, is touching the connective tissue. So it's a simple layer, but it looks stratified. The only one you don't see on here is transitional. So transitional epithelium is like the name implies going to transition. It looks different depending on what's going on. So you're going to see this in the urinary system. It's going to be cells that they bunch together like when the bladder is empty, for example, but then they stretch and thin out as it fills up. So transitional epithelium can change its shapes depending on what's going on. All right, so that's how you classify epithelial tissue. I hope this helps. Have a wonderful day. Be blessed.