Sternum

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The sternum or breastbone, in vertebrate anatomy, is a flat bone. In amphibians and reptiles it is normally shaped like a shield, often made of cartilage. It is absent in both turtles and snakes. In birds it more large, and has flight muscles attached to it.[1] Only in mammals does the sternum take on the longer form seen in humans.

References[change | change source]

  1. Romer, Alfred Sherwood; Parsons, Thomas S. (1977). The Vertebrate Body. Philadelphia, PA: Holt-Saunders International. p. 188. ISBN 0-03-910284-X.