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Image #   29029C
Name:   Pelican bird bone
Copyright:   Copyright 2009 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Pneumatic bird bone - pelican leg (ulna) bone (Pelecanus occidentalis). The pelican ulna bone is an example of ""pneumatic bird bone"" which has numerous spaces / holes with intersecting columns / struts (called trabeculae). Pneumatic bone is a hollow type of bone that contains supporting trabeculae. This type of bone is filled with air and often connected to the respiratory system. Large, soaring birds have developed some pneumatic bones, such as, pelvic girdle, some ribs, humerus, ulna and the femur. The spaces and trabeculae in pneumatic bird bones provide a combination of lightweight and strength as an adaptation to flying. Small birds and diving birds have apneumatic bones. Bird bones contain more calcium than mammalian bones.
Magnification*: x13
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   29029C 04.01.09 bird bone bird pneumatic bone pneumatic bone pneumatic bones pneumatic bird bone pneumatic bird bones bone cancellous bones leg bone leg bones spongy bone pelican bone pelican bones hollow bone hollow bones Pelecanus occidentalis trabeculae trabecular bone trabecular bones bird cortice bird cortices medullary canals medullary canal soaring bird soaring birds calcium cabonate CaCO3 mineralized bone mineralized bones mineralized bird bone mineralized bird bones pneumatized bone pneumatized bones bird leg bone bird leg bones bird ulna hollow bird bone hollow bird bones bone strut bone trabeculae Pelecanus SEM bird flight bone calcium bone mineralized calcium calcium cancellous bone

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