The heart is composed of several layers, including the:
1: pericardium: A protective sea that surrounds the heart and contains a small of fluid to reduce friction during heartbeat.
2: Myocardium thick muscular middle layer responsible for the heart's contraction.
3: Endocardium: The innermost layer that line the heart chamber and helps regulate blood flow.
The heart's contraction ,heartbeats, are driven by electrical signals that originate in the sinoatrial (SA)
node, referred to as the "natural pacemaker "of the heart
These electrical impulses travel through the heart's conduction system, causing the atria
to contract first, followed by the ventricles, which pump blood the body.
the hearts pumping acting generates blood pressure, which is essential for maintain circulation and delivering oxygen and nutrients to all tissues and organs .proper heart function is crucial for overall health, and any disruption or diseases effecting the heart com have serious Condition indude coronary artery diseases heart failure arrhythmias and volve disorders,
