depolarization • جبرابیت

Depolarization and Repolarization: The Electrical Wave of Life

ENaction potential arrhythmias Brugada Syndrome calcium channels cardiomyocyte depolarization ECG EKG ion channels Long QT Syndrome myocardial infarction P wave potassium channels QRS complex repolarization resting membrane potential sodium channels T wave

Introduction: Why Understanding the Heart’s Electricity is Crucial The human heart is a biological marvel, a tireless pump that beats billions of times throughout a lifetime, delivering oxygen and nutrients to every cell in the body. This rhythmic beating, which we feel as our pulse, is not driven by magic, but by a precisely orchestrated […]

Electricity and the Heart: Making the Connection

ENactin action potential AV node calcium cardiac cycle cardiac muscle depolarization electricity excitation-contraction coupling gap junctions heart myosin Purkinje fibers repolarization SA node tropomyosin troponin

Why is the heart an “electrical organ”? The heart is often referred to as an “electrical organ” because its function, the rhythmic pumping of blood, is fundamentally controlled and coordinated by electrical signals. While the heart is also a muscular organ (and a very powerful one at that), it’s the electrical activity that initiates and

Part 1: Introduction – What’s an ECG, and Why Do We Need It?

ENarrhythmia cardiac cycle depolarization ECG EKG electrical activity electrocardiogram electrodes heart heart attack heart rate heart rhythm leads myocardial infarction P wave QRS complex T wave

1. The Amazing Beating Heart: A Quick Tour! 1.1 Why Your Heart is a Superhero (And How It Works) Your heart is, without exaggeration, a biological marvel. It’s a powerful, tireless pump that works continuously throughout your life, supplying your entire body with the oxygen and nutrients it needs to function. Think of it as