What is an electrocardiogram?
- It monitors the the activity of the Heart.
- Several electrodes are attached to specific places on a persons chest.
- These electrodes detect electrical changes in the heart by measuring current at the skins surface.
- Then the leads are connected to a machine that draws an electrocardiogram (ECG)
1 of 2
- Generates a wave of signals.
- That spread through the atria, this causes them to contract simultaneously.
- The signal then moves to the apex of the heart.
- This signal then spreads throughout the ventricles. Which triggers the power contraction of the ventricles.
- Then finally the heart relaxes, the ventricles become re-primed electrically, ready to conduct signals in the next cardiac cycle.
2 of 2
Similar Biology resources: