Epithelial tissue

6. inelastic fibres of great tensile strength made up of collagen protein.
10. an epithelium with more layers of cells.
12. this epithelium seems stratified but it's not.
14. the surface of a cell that faces the lumen, which is the inner cavity of an organ or blood vessel, or that is exposed to the body exterior.
15. the basic structural and functional unit of all organisms
16. the epithelium with a single layer of cuboidal cells.
18. a cell that is as high as wide.
19. a flat cell (it is wider than it is high).

1. the basal surface of epithelial cells lies on it.
2. the epithelium that lines the bladder cavity. Its apical cells change their shape as the bladder fills with urine.
3. the main function of epithelial tissue.
4. the epithelium with a single layer of flat cells.
5. the ground substance and fibers between cells in a connective tissue.
7. A passive process in which there is a net or greater movement of molecules or ions from a region of high concentration to a region of low concentration until equilibrium is reached.
8. These short fibres cluster into a mesh-like network (reticulum = network) that covers and supports the structures bordering the connective tissue.
9. fibres composed primarily of the protein elastin (rubber like protein) that allows them to function like rubber bands.
11. it lacks blood vessels
13. an epithelium with a single layer of cells.
15. a cell that is taller than it is wide.
17. a group of cells of similar structure that perform a common function.