17. Because the heart has its own electrical impulse it can continue to beat even when separated from the body, as long has it has a supply of oxygen. .....
18. In 1929, German surgeon Werner Forssmann examined the inside of his own heart by threading a catheter into his arm vein. This was the first cardiac catheterization, a now common procedure. .....
19. On December 3, 1967, Dr. Christiaan Barnard of South Africa transplanted a human heart into the body of Louis Washansky. Although the recipient lived only 18 days, it is considered the first successful heart transplant. .....
22. As we said earlier, happiness really does lead to heart health. And so does laughter. Laughing can send 20 percent more blood flowing through your body and it relaxes your vessel walls. .....
23. No one is exactly sure why the heart has historically been associated with love (many ancient civilizations associated it with emotions) but some historians attribute it to the Greeks. .....
24. The idea of a broken heart actually carries some weight. After experiencing an emotionally traumatic event your body releases stress hormones into the blood stream that can temporarily shock the heart and even mimic heart attack symptoms. .....