Knowledge gained during Henry Hudson's four voyages significantly expanded on that from previous explorations made in the 16th century by Giovanni da Verrazano of Italy, John Davis of England and Willem Barents of Holland.
You are really asking three questions; Your brain begins to die after 4-6 minutes without oxygenated blood being delivered to it. If your blood is flowing out from a wound that causes a few things to happen...less blood is delivered to organs, therefore less oxygen and eventually you will bleed out and that's it.
What happens if your lungs stop working?   Lungs supply oxygen to your blood and they also clear waste carbon dioxide. If they stop working your blood loses oxygen and starts to build up an excess of waste carbonâ¦ dioxide. Muscles and other tissue can survive quite a long period without oxygen, but the brain cannot. Shortage of oxygen to the brain will cause you to lose consciousness.