3. Belly Button
It marks the spot where the umbilical cord was attached while in your mother’s womb, but does it serve a purpose after birth? Yes, it collects lint!
The spleen is an organ that helps filter the blood. It also acts as a reservoir for immune cells called monocytes. People can live without a spleen, but may be more prone to certain types of infections.
Definitely can live without it. Recent studies suggest that the appendix might not be completely useless after all. It could function as storage for beneficial bacteria meant to refill the stomach after an illness washes out old bacteria.
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