Epithelial tissue

2. a cell that is as high as wide.
5. the epithelium with a single layer of cuboidal cells.
8. These short fibres cluster into a mesh-like network (reticulum = network) that covers and supports the structures bordering the connective tissue.
10. 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.
11. the epithelium with a single layer of flat cells.
14. the ground substance and fibers between cells in a connective tissue.
17. the main function of epithelial tissue.
18. a flat cell (it is wider than it is high).
19. this epithelium seems stratified but it's not.
20. the basal surface of epithelial cells lies on it.

1. vessel, or that is exposed to the body exterior.
3. the basic structural and functional unit of all organisms
4. it lacks blood vessels
5. an epithelium with more layers of cells.
6. a cell that is taller than it is wide.
7. the epithelium that lines the bladder cavity. Its apical cells change their shape as the bladder fills with urine.
9. the surface of a cell that faces the lumen, which is the inner cavity of an organ or
12. a group of cells of similar structure that perform a common function.
13. an epithelium with a single layer of cells.
15. inelastic fibres of great tensile strength made up of collagen protein.
16. fibres composed primarily of the protein elastin (rubber like protein) that allows them to function like rubber bands.