Epithelium

5. process resulting from random motion of molecules from a region of high concentration to a region of low concentration.
7. the epithelium with a single layer of flat cells.
9. epithelial junction located at the most apical surface of epithelial cells that form like a barrier that restricts free diffusion of molecules across the intercellular space.
10. an epithelium with more layers of cells.
11. Complex network of polysaccharides and proteins secreted by cells.
13. a cell that is as high as wide.
14. the epithelium with a single layer of cubic cells.

1. the basal surface of epithelial cells lies on it.
2. this junction connects the cytoplasm of two cells.
3. the main function of the epithelial tissue.
4. this epithelium seems stratified but it's not.
6. a flat cell (it is wider than it is high).
8. this type of cell secretes mucus.
9. the epithelium that lines the bladder cavity. Its apical cells change their shape as the bladder fills with urine.
12. an epithelium with a single layer of cells.
13. a cell that is taller than it is wide.