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1.Bent forward at the waist32.Standing straight up33.Bent forward at the knees34.Laying down12. Which of the following is the FIFTH step of CPR?1.Call 9-1-135.Check for breathing36.Open the victim's airway37.Provide mouth-to-mouth breathing13. Which of the following is the lower respiratory system responsible for?1.Secreting a mucus that filters, warms, and cleanses the air38.Heart getting blood out to every cell in the body39.Getting oxygen to the cells of the body40.Gas exchange that occurs when oxygen enters the blood14. Which of the following is the correct order when you witness a victim needing CPR?1.Check the scene, check the victim, call 911, and start compressions im-mediately41.Check the scene, call 911, check the victim, and start compressions immedi-ately42.Call 911, check the scene, check the victim, and start compressions immedi-ately43.Call 911, check the victim, check the scene, and start compressions immedi-ately15. What is the main function of the circulatory system?1.Carbon dioxide leaving the body44.Moving blood between the heart and lungs45.Gas exchange when oxygen enters the blood46.Filtering the air as it enters the body