Anatomy Arcade -Circulatory System Word Search CIRCULATORY SYSTEM WORD SEARCH. Description: Twenty odd words about the circulatory system to find in this word search Difficulty: Easy. Does not require prior knowledge. Will take a few minutes to solve. Controls: Mouse click drag. Use the "hint" option when you get stuck Circulatory System Word Search - Free Word Search Puzzles Medical students and doctors can enjoy this hard health word search about the circulatory system.