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Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBody Fluids and Circulation1 Mark
MCQ
ECG records:
  • A
    Electric current of the body
  • B
    Potential differences
  • C
    Pulse rate
  • D
    Both A and B
✓

Answer

  1. Both A and B

Explanation:

As the heart undergoes depolarization and repolarization, the electrical currents that are generated spread not only within the heart, but also throughout the body. This electrical activity generated by the heart can be measured by electrodes placed on the body surface. The recorded tracing is called an electrocardiogram. 

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