Answer:
There are two structurally and funtionally different surfaces in epithelial tissue.
Explanation:
The outer covering of organs and blood vessels is lined by epithelial cells. These cells also line the inner surface of many cavities in the body.
- Glands are formed of epithelial tissue and divided how they secrete their hormones (Exocrine and Endocrine gland).
- The cells in epithelial tissue are tightly packed.
- One side of cells is free that is not in contact with other cells (outer covering).
