ventricular depolarization

**ventricular depolarization**

Ventricular depolarization refers to the electrical activation of the ventricles, which triggers their contraction and is a critical phase of the cardiac cycle. This process is responsible for pumping blood out of the heart to the lungs and rest of the body. Ventricular depolarization is typically represented on an electrocardiogram (ECG) as the QRS complex, indicating the rapid spread of electrical impulses through the ventricular muscle. Understanding ventricular depolarization is essential for diagnosing and managing various cardiac conditions such as arrhythmias and heart block.