Try out the following games and quizzes to prepare for the test

http://www.anatomyarcade.com/games/matchingGames/MatchABodySystem/matchABodySystem.html

http://www.sciencenetlinks.com/interactives/systems.html 

http://nobelprize.org/educational/medicine/immunity/game/index.html 

http://nobelprize.org/educational/medicine/immunity/ 

http://www.newgrounds.com/portal/view/478787

http://www.quia.com/rr/6241.html