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What organ systems human body? - video, In lesson, learn 11 organ systems, multiple organs work human body functioning.. https://study.com/academy/lesson/what-are-the-organ-systems-of-the-human-body.html Bodily organ pictures | howstuffworks, This bodily organ image gallery shows body . check bodily organ pictures.. https://health.howstuffworks.com/human-body/parts/bodily-organ-pictures.htm Placenta - wikipedia, The placenta organ connects developing fetus uterine wall nutrient uptake, thermo-regulation, waste elimination, gas exchange . https://en.wikipedia.org/wiki/Placenta