1. Life Saving Technologies By Caitlyn and Christina

3. The blood must be the same blood type as yours.

4. Blood transfusion is not permanent and is only a short supply.

6. They are used to diagnose heart problems or abnormalities.

7. Electrocardiograms are produced when electrodes are stuck to the skin.

8. When the heart beats, it produces tiny impulses which the electrocardiogram measures.

10. A pacemaker's job is to maintain a sufficient heart rate.

11. A pacemaker is used when the heart's cardio pacemaker is not fast enough or there is a block in the heart's conduction system.