Heart and ECG Activity

The Apex is the pointed end of the heart, located at the bottom of the left ventricle, and is responsible for the heart's contraction.

The P wave represents atrial depolarization, which is the electrical activity that triggers the contraction of the atria.

The T wave indicates the repolarization of the ventricles, which is the process of the heart muscle cells returning to their resting state after contraction.

The SA node, or sinoatrial node, is the natural pacemaker of the heart that initiates the electrical impulses for heartbeats.

The AV node, or atrioventricular node, acts as a gatekeeper that slows down the electrical signal before it passes to the ventricles, allowing for proper timing of contractions.

Purkinje Fibers are specialized conductive fibers located in the ventricular walls that distribute the electrical impulse, causing the ventricles to contract.

Depolarization is the process by which heart muscle cells become electrically activated, leading to contraction.

Repolarization is the process by which heart muscle cells return to their resting state after contraction, preparing for the next heartbeat.

The QRS complex represents ventricular depolarization, which is the electrical activity that triggers the contraction of the ventricles.

The heart's conduction system consists of specialized cells that generate and conduct electrical impulses, coordinating the heart's contractions.