What happens when your body is cut? Why don’t you bleed to death? Join biochemist Michael Behe as he explores your body’s amazing emergency response system known as the blood clotting cascade. Learn how the body has its own 911 system and first responders that work to repair punctures to the skin before they kill you. This is Episode 7 of Behe’s video series “Secrets of the Cell.” More episodes can be viewed at michaelbehe.com/secrets.