← Chapter 19
Anatomy & Physiology · Chapter 19
The ECG
An
electrocardiogram (ECG)
records the heart's electrical signal from the skin. Each bump matches a step in the heart's wiring. Tap a wave.
P wave
▶ Sweep
The ECG
P · QRS · T
The waves
📷 Reference image
A real labeled picture to compare with the activity above.
The ECG — OpenStax, CC BY 3.0 (via Wikimedia Commons)
