The human body is electric because it generates and conducts electrical signals through various physiological processes. One of the most important systems responsible for this is the nervous system, which includes the brain, spinal cord, and nerves.
Nerve cells, also known as neurons, communicate with each other by sending electrical signals, called action potentials, from one end of the neuron to the other. These signals travel along the neuron's axon, which is surrounded by a fatty sheath called myelin that helps to insulate and speed up the transmission of the signal.
The electrical signals generated by neurons can be measured with instruments such as an electroencephalogram (EEG) or electromyogram (EMG), which are used to diagnose and monitor conditions related to the nervous system.
In addition to the nervous system, other parts of the body also generate electrical signals. For example, the heart generates electrical signals that regulate its rhythm and the muscles in the body generate electrical signals that control their contractions.
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