Question

The human skeletal system is divided into ...................... parts.

Answer 1

The human skeletal systemis divided roughly into 2 parts. The axial skeleton and the appendicular skeleton.

The 80 bones from the axial skeleton form the vertical axis of the body. These include the bones of the head, vertebral column, ribs and breastbone and sternum.

The appendicular skeleton consists of 126 bones and includes free appendages with the axial skeleton. These appendages are the limbs of the body and these attachments are called as girdles.    

Answer 2

The skeleton is subdivided into two major divisions—the axial and appendicular.

The axial skeleton forms the vertical, central axis of the body and includes all bones of the head, neck, chest, and back . It serves to protect the brain, spinal cord, heart, and lungs. It also serves as the attachment site for muscles that move the head, neck, and back, and for muscles that act across the shoulder and hip joints to move their corresponding limbs.

The appendicular skeleton includes all bones of the upper and lower limbs, plus the bones that attach each limb to the axial skeleton. There are 126 bones in the appendicular skeleton of an adult. 


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