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This skeletal element is found in both crocodilian as well as avian species and functions to...

This skeletal element is found in both crocodilian as well as avian species and functions to strengthen the rib cage as well as serve as lever arms for some respiratory muscles.

  1. Zygapophyses
  2. Keel
  3. Osteoderm
  4. uncinate process
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This skeletal element is found in both crocodilian as well as avian species and functions to strengthen the rib cage as well as serve as lever arms for some respiratory muscles.

D. uncinate process (correct answer)

These processes in the ribs attach the ribs with the scapula muscles and strengthen the ribs. They also increase the effectiveness of respiratory muscles. They are present in some amphibians also.

a. zygapophyses (It is the projection of the vertebra)

b. Keel (This is a feature in sternum and exclusively for birds)

c. Osteoderm (they form the dermis and are bony deposits.)

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