1. Homeostasis Prof. K. Sivapalan

2. Unicellular organisms exchang nutrients and wastes with the environment. They moved in the environment towards nutrients and away from wastes and poisons Multicellular organisms also must exchange the same with environment. But the functional unit of the body is the cell. Each cell cannot exchange with environment directly. The space surrounding each cell is the internal environment. This space is named extra cellular space. Unicellular organisms exchang nutrients and wastes with the environment. They moved in the environment towards nutrients and away from wastes and poisons Multicellular organisms also must exchange the same with environment. But the functional unit of the body is the cell. Each cell cannot exchange with environment directly. The space surrounding each cell is the internal environment. This space is named extra cellular space. June 20132 Environment.

3. June 20133 Internal environment.

4. June 20134 Maintaining the constancy

5. June 20135 Systems for homeostasis.

6. June 20136 Transport within the body

7. June 20137 Regulation and coordination

8. Neurological Control June 20138 Receptor Afferent Centre Efferent Response Muscle Gland Parameter

9. June 20139 Hormonal Control. Metabolite Secretion of hormone. Response. Negative feed back. + - + Positive Feed Back +

10. June 201310 Continuity of the community.