Is it true that the heart pumps hard enough to squirt blood up to 1600 metres?

Yes, it is true that the human heart can generate enough pressure to squirt blood at impressive distances. In a healthy adult, the heart can create a pressure of about 120 mmHg during a contraction, which could theoretically propel blood up to around 30 feet (approximately 9 meters) under optimal conditions. However, the claim of 1600 meters is highly exaggerated and not supported by physiological evidence. The actual distance blood can travel depends on various factors, including the size of the blood vessel and the pressure exerted.