It almost the same but the model of the heart has the difference to the human heart.
That is , the model heart is just a model it can't collect all the carbon dioxide . Compare to the human heart it collects all the carbon dioxide through our body. One more thing is . the model heart can't exchange gases ( carbon dioxide-oxygen).The only purpose of it is to show how does blood comes out and what is the purpose of the heart.

hope you like it.:))