Diagram of the Human Muscular System (Infographic) ... The muscular system can be broken down into three types of muscles: ... shape, action, origin/inser-tion and/or number of origins.

Convert each number from 0-9 into a memorable, vivid shape. Number one could be a paintbrush, number two a swan: it’s called the number-shape system, and it takes 10 minutes to build your own.