Question

What are epithelial tissues?

Answer 1

Tissue:

1. A group of identical cells, combined with an intercellular substance, fulfill a specialized role in multicellular creatures.
2. Animal tissues are divided into four groups: epithelial tissue, connective tissue, muscle tissue, and neural tissue.

Epithelial tissue:

1. This tissue serves as a covering or lining for a body part.
2. It has a free surface that is exposed to either a body fluid or the outside environment.
3. Epithelial tissues are divided into two types: simple epithelium (single layer of cells) and compound epithelium (two or more layers of cells).
4. Example - Skin, the lining of body cavities, ducts, and tubes.