Which organ system's main purpose is to make movement possible?

The answer is muscle or the muscular system.
  Muscular system is made up of muscle tissue that helps move the body and move materials through the body. In simpler explanation, muscle moves you. Muscles are bundles of cells and fibers that work in a simple way. They tighten up and relax. It consists of skeletal, smooth and cardiac muscles. 

Your weave is crusty

True but only in the south coastal areas during september and early october.