3. Homeostasis Definition: Keeping the internal environment in a Steady state It is controlled by Negative Feedback Mechanism

4. Rise above normal value Fall below normal value normal value Corrective Mechanism Corrective Mechanism NEGATIVE FEEDBACK MECHANISM normal value negative feedback negative feedback

7. After Sweating Concentrated Blood Larger proportion of water is reabsorbed Normal Water Content in Blood Concentrated Urine is produced

8. After Drinking Diluted Blood Smaller proportion of water is reabsorbed Normal Water Content in Blood Diluted Urine is produced

12. Maintenance of Body Temperature SKIN

13. Structure of Mammalian Skin Epidermis Dermis Outermost layer Middle layer Innermost layer Sweat gland Blood capillaries Subcutaneous fat Receptors Erector muscle Nerve fibres Sebaceous gland Hair follicle

22. Control Body Temperature in Hot Conditions

26. Control Body Temperature in Cold Conditions

31. normal blood glucose level Blood glucose level falls Blood glucose level rises normal blood glucose level Too High Too Low Liver converts glycogen to glucose Soon after a meal Long after a meal Pancreas secretes insulin Pancreas secretes less insulin Liver coverts glucose to glycogen

32. ~ END ~