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Preksha Dhayan :
matrix between them. The cells of a particular tissue are specialized for the performance of specific functions. Tissues performing a common function or functions are grouped into organs. A system is a group of organs that work together as a team to perform a series of functions. The important systems of the body are as follows:
1. The Skeletal System provides the basic framework that supports the body. It consists of bones, cartilage and the connective tissue which bind them together. It protects the vital but vulnerable organs of the body.
2. The Muscular System consists of skeletal and smooth muscles. It works with the bones to provide support and produce movements of body parts.
3. The Integumentary System--the skin-is both a mechanical and a chemical barrier between the body and the environment. It protects the body from microbes, from injury to inner tissues, from damage by ultraviolet radiation of the sun. It also protects the body from dehydration. It retains heat in cold season and dissipates excess heat in hot season and helps temperature regulation.
4. The Digestive System is concerned with the intake, breakdown and absorption of food materials and the elimination of solid wastes.
5. The Circulatory System distributes nutrients and oxygen to the cells and carries away their waste products.
6. The Respiratory System provides the means for bringing oxygen into the body and eliminating carbondioxide.
7. The Excretory System works to eliminate the waste products of cell activity.
8. The Nervous System receives and evaluates information about the outside world and controls and co-ordinates the body's activities.
9. The Endocrine System produces chemical substances (hormones) that affect other cells and organs and help to control and co-ordinate their activities.
10. The Reproductive System functions for the continuation of the species.
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