This is a 12-word x-word puzzle with the KEY. It was created directly from the board notes on drugs and the nervous system (a free download). It's important for students to have a graded assignment that correlates with notes (in open notes format, board notes or PPT) to understand the importance of the notes and to enforce the learning concept of the content. No other notes or information, with the exception of the free board notes, are needed to complete this x-word puzzle. No tricks, no gimmicks. It's all there :).