Scar tissue is a variety of (a) epithelium, (b) connective tissue, (c) muscle tissue, (d) nervous tissue, (e) all of these. Name four important functions of epithelial tissue and provide at least one...

Scar tissue is a variety of (a) epithelium, (b) connective tissue, (c) muscle tissue, (d) nervous tissue, (e) all of these.

Name four important functions of epithelial tissue and provide at least one example of a tissue that exemplifies each function.