After being sure you finish your body system presentation you can learn more about the systems:

(specially go into the one you are presenting..)

Travel through the body http://www.healthexplorationstation.com/fun/hes2.htm

All the body https://www.getbodysmart.com/
CIRCULATORY

 

 save a man http://lrrpublic.cli.det.nsw.edu.au/lrrSecure/Sites/Web/skoool/bio/sim/blood/index.htm

http://www.bbc.co.uk/schools/scienceclips/ages/9_10/keeping_healthy_fs.shtml

http://www.bbc.co.uk/schools/gcsebitesize/pe/appliedanatomy/circulatory/0_anatomy_circulatorysys_act.shtml

 
DIGESTIVE

 

 video and quiz http://kidshealth.org/en/kids/dsmovie.html

let´s eat. See how you digest the food http://interactivehuman.blogspot.com.es/2008/05/digestion-interactive-game-for-kids.html

see the stomach http://lessons.e-learningforkids.org/efk/Courses/Liquid_Animation/Body_Parts/Digestive_System/digestive_object.swf

 

 
RESPIRATORY

 

  

https://www.youtube.com/watch?v=d6bnSyk8BrU

http://discoverykids.com/articles/your-respiratory-system/

save the patient http://lrrpublic.cli.det.nsw.edu.au/lrrSecure/Sites/Web/skoool/bio/sim/breathing%20and%20respiration/index.htm

 
NERVOUS SYSTEM

 

 Nervous system video https://www.youtube.com/watch?v=CR8wVRSIClQ

https://www.youtube.com/watch?v=-nH4MRvO-10

Nerves game http://www.rigb.org/education/games/human-body/nerve-wrecker

 

 

 

More: Did you enjoyed the solar system talk? Revise the links in the other post

Year 5. Solar System review

Also you have more  games and apps in this post:

Body system apps and symbaloos