Emperor Penguin parents with chick

Wednesday, January 4, 2012

Skeletal/Muscular Systems

-allows for birds to stand upright
-denser bones to overcome buoyancy compared to flying birds that have hollow, lightweight bones
- three sections of the skull correspond to certain portions of the brain
-two piece mandible
-larger sternum for swimming and sliding
-each limb has one bone, not including phalanges

-oxygen stored in myoglobin in muscle that allows deeper and longer dives
-wings and breast muscles help propel through the water

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