How To Make A Working Model Of The Human Heart?

I have to make a working model of a human heart what should I di for it

Take a baloon, a cycle puncture pump join them and see it work

Constituted mainly by the heart myocardium, with left atrium and left ventricle, right atrium and right ventricle of four cavity. And between left and right atrium between the left and right ventricles are separated by the interval, it is mutually unintelligible, valve between the atrium and ventricle, the valve so that the blood from the atrium into the ventricle only, not back.

Refer wikianswers

I have to make Working model of heart I m not the matter.

Take a real heart !!!!!

Take out your heart