Which epithelium provides protection against chemical and mechanical stresses?

Gap junctions are -

Persons who do hard manual work with their hands are likely to develop:

Describe the types and functions of Glandular epithelium.

What type of epithelium is found in the trachea?

Which of the following statements is/are correct regarding epithelial tissue?
$a$ - Cells are compactly packed.
$b$ - Cells have little intercellular matrix.
$c$ - It can be single or multi-layered.