Staying youthful

Tissues are composed of cells and are the intermediate stage before becoming a complete organ. Tissues have cells, which perform identical functions in the body. The four major types of tissues are epithelial tissue, connective tissue, nerve tissue and muscle tissue. All the organs have almost all types of tissues, like every organ has every type of cell. Tissues contribute to a cooperative and precise function for the organ and are readily available when needed. Epithelial tissues perform the actions of protecting, absorbing and secreting substances and also detecting sensations. This tissue is the one which covers every exposed organ in our body. Epithelium provides exterior protection from dehydration, abrasion, and damage. It also disallows substances going out of the body. Also epithelium is the detector of sensation such as hearing, touching, seeing, smelling and tasting. Connective tissues are like adhesives because they bond other tissues together. They contain more intercellular materials than other tissues. Blood, bone, cartilage are the most common types of connective tissues. Muscular tissues have the ability to expand and contract. Muscle cells are usually elongated, providing room for elasticity. A single stimulus received by one cell of the muscular tissue can pass on to other cells at a fraction, and all the cells work together the desired action.

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