Useless Body Parts

A%20long%20muscle%20that%20runs%20from%20the%20elbow%20to%20the%20wrist.%20It%20could%20have%20been%20important%20for%20hanging%20and%20climbing.%2011%25%20of%20people%20do%20not%20have%20one.%20Source%3A%20Discover%20Magazine%20%28credit%3AAP%29

Humans%20used%20to%20have%20to%20chew%20a%20lot%20plants%20to%20get%20enough%20food%20to%20survive%2C%20therefore%20the%20extra%20teeth.%20Today%2C%20only%20about%205%25%20of%20the%20population%20has%20a%20healthy%20set%20of%20Wisdom%20Teeth.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20CBS%29

A%20small%20muscle%20that%20goes%20from%20under%20the%20shoulder%20to%20the%20first%20rib%20to%20the%20collarbone%20that%20would%20be%20used%20if%20we%20walked%20on%20all%20fours.%20Some%20people%20have%20one%2C%20others%20don%E2%80%99t%20and%20some%20people%20have%20two.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20AP%29

Chimpanzees%20and%20gorillas%20have%20them.%20But%20only%20about%208%25%20of%20humans%20have%20an%20extra%20rib.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20AP%29

This%20foot%20muscle%20helps%20primates%20grasp%20with%20their%20feet.%20It%E2%80%99s%20disappeared%20in%209%25%20of%20humans.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20AP%29

Three%20muscles%20that%20made%20it%20possible%20for%20early%20man%20to%20move%20their%20ears%20independently%20of%20their%20heads%2C%20the%20way%20that%20dogs%20and%20cats%20can.%20These%20muscles%20are%20why%20some%20people%20can%20learn%20to%20wiggle%20their%20ears.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20AP%29

Eyebrows%20help%20keep%20sweat%20out%20of%20the%20eyes%20and%20women%20may%20be%20attracted%20by%20male%20facial%20hair%2C%20but%20most%20of%20our%20body%20hair%20serves%20no%20function%20or%20purpose.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20AP%29

The%20muscle%20that%20allow%20animals%20to%20puff%20up%20their%20fur%20to%20keep%20warm%20or%20intimidate%20predators.%20Humans%20sill%20have%20them%20which%20allows%20us%20to%20get%20goose%20bumps.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20wikimedia%29%0D%0A

Birds%20have%20them%20for%20protecting%20the%20eye%20and%20cleaning%20out%20debris.%20Humans%20still%20have%20a%20tiny%20fold%20in%20the%20inner%20corner%20of%20the%20eye.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20AP%29

Lactiferous%20ducts%20form%20before%20the%20sex%20of%20the%20fetus%20is%20determined.%20Men%20have%20the%20necessary%20tissue%20to%20produce%20milk.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20AP%29

A%20set%20of%20small%20ribs%20that%20appear%20in%20less%20than%201%25%20of%20the%20population.%20They%20can%20cause%20nerve%20and%20artery%20problems.%20They%20may%20be%20leftover%20from%20the%20age%20of%20reptiles.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20AP%29

The%20tail%20bone.%20The%20fused%20bones%20are%20all%20that%E2%80%99s%20left%20of%20the%20tail%20that%20most%20mammals%20used%20for%20balance%20and%20communication.%20Some%20people%20think%20the%20coccyx%20helps%20support%20organs%20or%20that%20muscles%20are%20attached%20to%20it%2C%20but%20they%20can%20be%20removed%20without%20any%20health%20problems.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20AP%29

It%20used%20to%20help%20early%20humans%20digest%20all%20the%20plant%20material%20they%20ate.%20Now%2C%20more%20than%20300%2C000%20Americans%20have%20appendectomies%20each%20year.%20Source%3A%20Discover%20Magazine%20%28credit%3A%20AP%29