What is an alternative model of a lung or heart that can bes used in an experiment?

Question

i was going to test how nicotine affects it.

Answer 1

plastic bottle, with cotton wool inside. the cigarette secured then lit on the opening squeeze the bottle a few times for it to smoke the cigarette, the cottonwool will turn yellow

Answer 2

there is a small pipe 4 holding the ciga.inside the pipe is a cotton wool 4 filtering the smoke when u suck the pipe.after sucking 4 a few minutes u can see the cotton wool becomes yellow or light brown color which is nicotine from the ciga.