which of the two main divisions of the human skeleton protects many of the vital organs? explain.

Axial and appendicular

Explanation:

axial:forms longitudinal axis of the body, has 80 bones and consists of the skull (and bones associated with it), vertebral column, and thoracic cage

appendicular:appendages to the central skeleton and the bones of the upper and lower limbs.

INcluding the grirdles that attach them to the axial skeleton and it's main concern would be the movement of the body