ANSWERS: 2
  • http://www.mreroh.com/student/anatomylinks/ADAMbeyond/Skeletal%20System.htm some of the questions i've been trying to answer, i have found them here
  • Because during birth, the fetal develops the thoracic and sacrum in the same position we are in now. When the newborn raises its head upright, that is a secondary curvature, to the cervical vertebrae.When the newborn stands upright, the lumbar vertebrae changes too.

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