If stretched all the way, how big are the human organs?

If it spread all the way, the human brain was the size of a pillow case, the human skin covered the floor of a small tent, and the human gut was about the same length as a three-story building, while the blood vessels in the body people who can line up can surround the Earth 4 times.

1. Find the gene that is still active after our bodies die
2. 20 types of strange objects discovered in the human body make you 'floaters'
3. 5 parts of the human body become redundant and useless due to evolution