The spark of life
The body's wiring system
The ultimate electric pump
Electric senses and future tech
What is the primary function of an automated external defibrillator (AED) during cardiac arrest?
sonia Tap the electrical impulses to discover how electricity keeps your heart beating.
sonia Doctors use sensitive sensors on your skin to draw a map of the electrical currents flowing through your beating heart.
What is the medical term for the recovery phase where heart cells restore their resting electrical charge?
Heart electricity: The human heart generates its own independent electrical impulses, allowing it to beat even when severed from the body.
sonia Defibrillators do not start a stopped heart; they temporarily freeze a chaotic electrical storm so the natural pacemaker can take over.
Into which chamber of the human heart is the natural pacemaker (sinoatrial node) built?
A hollow muscular organ that pumps blood through the circulatory system by rhythmic contraction and dilation. The human heart beats about 100,000 times daily, driven by electrical impulses from right atrium pacemaker cells.
What is the chaotic, rapid quivering of the heart muscle that prevents it from pumping blood called?
Who invented the first practical electrocardiogram (ECG) in 1901, earning a Nobel Prize?