| A | B |
|---|
| Functions of epithelial tissue include ( four items) | Protection, selective permeablity, secretions, sensations |
| Why does the epithelium need to be considered selectively permeable | Because all things that enter the body pass through the epithelium, thus it must be selective in its permeability. |
| Why does the epithelium need to be highly regenerative? | Because it has an apical area exposed to the environment which sluffs cells due to interactions with the environment. |
| Explain the difference between simple and stratified epithelium. | simple epithelium is a single layer of cells upon the connective tissue while stratified is many layers of cells in the epithelium. |
| Explain the role of the protein Keratin in epithelial tissue. | keratin toughens the cells when they are dead( skin cells) creating a durable surface on the skin. |
What type of epithelial tissue is pictured here?,  | simple cuboidal epithelium |
What type of epithelial tissue is pictured here?,  | simple squamous epithelium |
What type of epithelial tissue is pictured here?,  | stratified columnar epithelium |
What type of epithelial tissue is pictured here?,  | simple columnar epithelium |
What type of epithelial tissue is pictured here?,  | pseudostratified columnar epithelium |
| Gland type which uses exocytosis from apical surface | merocrine |
| Gland type that uses pinching off its apical surface into the duct for secretion | apocrine |
| Gland type which uses apical cells disintegrating into the duct for secretions | holocrine |
