Scientists Arena

Imagine if your heart stopped whenever it got tired of beating. It would be disastrous and defibrillator makers would rule the world. We, and every other thing with a heart, would be extinct in no time.

📌The heart is a unique type of muscle called cardiac muscle.The main differences is that cardiac muscle contains more mitochondria, which are responsible for producing energy within cells. This allows the heart to continuously contract and relax, pumping blood throughout the body, without becoming fatigued.