1. Chapter 12 The health of a persons body depends on the health of its systems and their interdependent functioning.

2. How are body systems connected???? Our body systems work do provide cells with what they need. All cells have these basic needs: Energy Nutrients Oxygen Removal of waste

3. Example: Cellular Respiration A chemical process that releases energy that is stored in glucose. Glucose +

4. Organs systems that are directly involved in Cellular respiration: Respiratory Digestive Circulatory Excretory

5. More connections between systems include: Circulatory and Respiratory The blood picks up oxygen from the lungs and delivers it to the body cells and picks up carbon dioxide from the cells and delivers to the lungs to be exhaled Digestive and Circulatory The digestive system breaks down food into glucose and nutrients, glucose and nutrients go to the blood from the small intestine and are transported to the cells

6. Nervous and muscular Nervous system monitors conditions outside the body through temperature sensing cells in the skin. Information is sent to the brain which send signals to the muscles to start shivering

7. Body Systems and Health Maintaining the health of each body system keeps the network of systems and the whole body healthy Factors that affect the health of body systems: 1.Diet 2.Exercise 3.Stress level

8. Health of Body Systems are affected by two factors: Genetic Factors – what we inherit from our birth parent. We have no control over this Lifestyle – choices we make about diet, habits, exercise etc.

9. We can choose to support healthy organs and body systems: Clean air and water Nutritious diet Exercise Restful sleep linnk

11. Scientific technologies related to our maintaining health body systems 1. Insulin pump – device that can be programmed to deliver a specific dose of insulin the at specific times when needed by the body during the day. Diabetics use these

12. 2. Artificial Heart – used when donor heart is not available

13. Examples of Careers in Health Lab technician X-ray technician Physiotherapist Nutritionist Nurses Doctors

14. Making informed decisions….. Food additives Sunscreen Sterioids