Millipedes
The nervous system of a millipede is particularly complex compared to its phylum members. The body is controlled by a three part brain, and attached to it is a nerve chord that runs the length of the entire body. Attached to this nerve chord are nerve clusters responsible for leg movement, as well as defensive precautions in the back muscles.
The outside layer of a millipedes shell is made up of dead cells and is hardened with calcium carbonate crystals. This robust exterior provides the millipede with a little defence against predators. The layer beneath is more flexible and absorbs shock from bumps and falls. The more flexible material that makes up this layer also provides added flexibility to the millipede’s body. The innermost layer is made up of skin.
The outside layer of a millipedes shell is made up of dead cells and is hardened with calcium carbonate crystals. This robust exterior provides the millipede with a little defence against predators. The layer beneath is more flexible and absorbs shock from bumps and falls. The more flexible material that makes up this layer also provides added flexibility to the millipede’s body. The innermost layer is made up of skin.