9 Interesting Quirks About the Human Body (3 of 5)

4. The small holes close to the edges of the eyelids serve an important purpose

Those little openings inside the edges of the eyelids are called puncta. These guys come in handy when you get tears in your eyes. Every time you blink, they pump some of the tear fluid out of your eyes. If the puncta gets blocked, it causes the tears to overflow.

5. Your liver is able to regenerate itself

Unlike the other organs in your body, your liver has superhero powers: when damaged it is able to regenerate itself. In fact, if up to 90% of your liver were to be removed, it would still grow back to its normal size!