World Wars and the AtomMedicine & Health Forssmann's heart catheter 1929Notable Werner Forssmann threads a catheter through his own arm vein into his heart and X-rays it, founding cardiac catheterization. ▲ MattersSaveShareTrace roots Longest chain: The Big Bang → First stars ignite → Supernovae seed heavy elements → The Sun forms → Earth forms → First oceans → First life → Photosynthesis evolves → Great Oxidation Event → Complex cells (eukaryotes) → Multicellular life → First animals → Cambrian Explosion → First vertebrates → Jawed fish → Fish walk onto land → The amniotic egg → The Great Dying → Dinosaurs appear → Asteroid ends the dinosaurs → Early primates → Apes split from monkeys → Human line splits from chimpanzees → Walking upright → First stone tools → Genus Homo appears → Homo erectus → Control of fire → Habitual fire and cooking → Homo sapiens appears → Complex language → Natufian villages → Oldest known bread → Agriculture begins → Irrigation → Uruk and the first cities → Cylinder seals → Writing (cuneiform) → Akkadian Empire → Neo-Assyrian Empire → Persian Empire founded → Cyrus Cylinder → Return from exile and the Second Temple → Birth of Jesus (traditional date) → Jesus of Nazareth crucified → Paul spreads Christianity → Edict of Milan → Christianity becomes Rome's state religion → Carolingian minuscule → Gutenberg's printing press → Vesalius' On the Fabric of the Human Body → Circulation of the blood → Forssmann's heart catheter Community notesLoading notes… Learn more ranked by votesDocumentnobelprize.orgThe Nobel Prize in Physiology or Medicine 1956 ↗Editor's pickBookJames S. ForresterThe Heart Healers ↗Editor's pickVideoSearch on YouTubeWerner Forssmann self catheterization ↗Editor's pick