1. The hardest part was trying to replicate the exact size and shape of the organs. It was also hard to try and place organs that I have never heard of.
2. I think I got the heart, lungs, bladder, brain, eyes, larynx, and skin right. I knew what these were, so I could figure out where they went.
3. I think I got the pharynx, liver, diaphragm, esophagus, gallbladder, trachea, pharynx, large intestine, small intestine, kidneys, pancreas, and spleen wrong. I have never heard of these organs, and I just guessed where they were.