Heart: The Vital Pump
Your heart is a muscular organ that pumps blood throughout your body, supplying oxygen and nutrients. It beats around 100,000 times a day, pumping approximately 7,570 liters of blood.
Four Chambers Functionality
The heart consists of four chambers: two atria and two ventricles. The atria receive blood, while ventricles push it out. This system ensures efficient circulation in two pathways, the pulmonary and systemic circuits.
Electrical Impulses Coordinate
Your heartbeat is governed by electrical impulses that originate in the sinoatrial node, often called the heart's natural pacemaker, coordinating contractions and maintaining a steady rhythm.
The heart can adjust its own blood flow depending on the body's needs. During exercise, it can increase the flow to supply muscles with more oxygen, showcasing its incredible adaptability.
Coronary Arteries Supply
Coronary arteries wrap around the heart's surface, providing it with oxygen-rich blood. These vital vessels can become blocked, leading to a heart attack, which is why heart health is critical.
Recent studies suggest that the human heart has limited regenerative capacities. Each year, about 1% of the heart's muscle cells are renewed, revealing a stunning aspect of heart healing.
Heart's Hidden Rhythms
The heart's rhythm is affected by various factors, including emotions and external stimuli. The phenomenon of 'heart rate variability' can offer insights into your nervous system's health and stress levels.