Keel (bird anatomy) Keel (bird anatomy) A keel or carina (plural carinae) in bird anatomy is an extension of the sternum (breastbone) which runs axially along the midline of the sternum and extends outward, perpendicular to the plane of the ribs. The keel provides an anchor to which a bird's wing muscles attach, thereby providing adequate leverage for flight. Keels do not exist on all birds; in particular, some flightless birds lack a keel structure. Historically, the presence or absence of a pronounced keel structure was used as a broad classification of birds into two orders: Carinatae (from "carina", "keel"), having a pronounced
Anatomy for Beginners Anatomy for Beginners Anatomy for Beginners is a television show created by Gunther von Hagens. In this 4-part series, Dr von Hagens and Professor John Lee demonstrated the anatomical structure and workings of the body. The 4 episodes ("Movement", "Circulation", "Digestion" and "Reproduction") were screened in the United Kingdom on Channel 4 in 2005. The show features public anatomy demonstrations with the use of real human cadavers and live nude models (for Surface Anatomy and Surface Markings), carried out at Gunther von Hagens' "Institute for Plastination" in Heidelberg, Germany. Dr von Hagens’ public demonstrations are not formal anatomy dissections performed