What should you do with your hands, arms and shoulders when doing chest compressions {Ans: hands, arms, and shoulders in line with straight arms, elbows locked and shoulders over your hands}What is the next critical link in the survival chain of an unresponsive drowning person after early recognition {Ans: early rescue breathing}What is an active spinal? {Ans: When you manually hold the person's head to limit movement}The regulator on an oxygen cylinder controls what {Ans: the rate of oxygen flow}what are the symptons of altered mental status {Ans: confusion, slowed thinking, loss of balance, impared vision}what should you avoid when storing an emergency oxygen system {Ans: extreme temperatures}