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Chapter 21 Vocab Review

Across
Greek root meaning ancient.
Greek suffix meaning wing.
The bill.
Main sight of flight muscle attachment.
Maintains proper flight posture. Made of fused vertebrae.
Covering of feathers on a bird.
Down
Vertebra responsible for head and neck movement.
Funny bone.
Ancestors of birds.
Single point of articulation on the atlas.
Helps support tail feathers.
Wishbone or fused clavicles.