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How many unpaired electrons are present in an oxygen molecule?
Electroencephalogram
A test that measures electrical activity in the brain using small, flat metal discs attached to the scalp.
Electromyogram
An electromyogram (EMG) is a diagnostic test that measures the electrical activity generated by muscles in order to assess their health and function.
Pacemaker Cells
Specialized heart cells that control the heart's rate by generating and conducting electrical signals.
Left Atrium
One of the four chambers of the heart, receiving oxygen-rich blood from the lungs and pumping it into the left ventricle.
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