GENERAL HISTOLOGY

Detailed explanation-1: -The cells in epithelial tissue are tightly packed together with very little intercellular matrix. Because the tissues form coverings and linings, the cells have one free surface that is not in contact with other cells.

Detailed explanation-2: -Cells of connective tissue are compactly packed with no intercellular spaces.

Detailed explanation-3: -Columnar Epithelia Columnar epithelial cells are taller than they are wide: they resemble a stack of columns in an epithelial layer. They are most-commonly found in a single-layer arrangement.

Detailed explanation-4: -Epithelial Tissue Function The free surface of epithelial tissue is usually exposed to fluid or the air, while the bottom surface is attached to a basement membrane. The cells in epithelial tissue are very closely packed together and joined with little space between them.

Detailed explanation-5: -Epithelia composed of a single layer of cells is called simple epithelia; epithelial tissue composed of multiple layers is called stratified epithelia.