explain structure of epithelial tissue
Answers
Epithelial tissue is composed of cells laid together in sheets with the cells tightly connected to one another. Epithelial layers are avascular, but innervated. Epithelial cells have two surfaces that differ in both structure and function.
Epithelial tissue, the type of tissue that lines the surfaces and cavities of your body's organs, is no different. Epithelial tissue is like the brand name Lego: Lego has differently sized and shaped blocks, and epithelial tissue has differently sized and shaped cells. Lego blocks can be arranged into differently shaped structures, and epithelial cells can be arranged into differently shaped structures as well.
Regardless of the shape, size, or arrangement of the cells, they are still a type of, or part of, epithelial tissue, just like all our differently sized, shaped, and arranged plastic bricks are still Legos.