What health hazard is presented by electrical current flowing through the body?

Electrical current passing through the human body poses several distinct and dangerous health hazards. First, the body has a natural electrical resistance, and as current forces its way through, this resistance generates severe internal heat, causing deep tissue burns. Second, the human nervous system operates using tiny electrical impulses. An external current can easily disrupt the electrical functions of cells, leading to severe neurological damage or cardiac arrest. Finally, this external current can override the brain's control of the body, causing violent, involuntary muscle contractions. This can result in a person gripping a live wire and being physically unable to let go. Because tissue heating, cellular disruption, and muscle contractions are all valid and deadly risks of electrical shock, the only complete answer encompasses all of these choices.