can you give me a Physiology powerpoint Presentation that summarizes the processes of the digestion,respiration,and circulation.

Put "digestion powerpoint presentation" into Google search. Then do the same with respiration and circulation. You will find some sites that may be of help. ie...this one.

http://74.125.47.132/search?q=cache:zy0jtCFcCNcJ:www.spolem.co.uk/worksheets/docs/Digestion.ppt+digestion+powerpoint+presentation&cd=3&hl=en&ct=clnk&gl=us&ie=UTF-8