1. Here's what dehydrated blood looks like:
2. Here's what a biker's legs look like after completing just one stage of the Tour de France:
3. And this is what an Olympic rower's hands look like after rowing for 1,000 km:
4. Here's what an X-ray of a child's hand looks like:
5. And here's how your hand changes over time:
6. Here are the smallest bones in the body (they're in the ear):
7. This is what it looks like to have your index finger amputated and re-attached as a thumb (this person was born without a thumb, and it's more useful to have a thumb than an index finger):
8. Here's what a corneal implant looks like:
9. This is what it looks like if you get a skin graft on your hand (if it's from a part of your body that grows hair, it will still grow hair once transplanted):
10. This is how amazing surgery is:
11. This is what it looks like if you push a Q-tip too deep into your ear (let this be a lesson not to use Q-tips to clean your ears!!):
12. This is what a cross-section of a bone looks like:
13. Here's what an actual human brain looks like:
14. Here are all the different layers of the skin as a wound heals:
15. Here's what it looks like to be born with two conjoined thumbs:
16. Here's how much muscles atrophy after an injury forces you not to use them (seen on the left foot compared to the right):
17. Here's what it looks like to get a tan when you have vitiligo:
18. And here's how vitiligo can affect hair:
19. Here's what it looks like to have Polycoria (aka multiple pupils):
20. This is how realistic a prosthetic eye can look:
21. Here's what strands of DNA look like:
22. Here's what a hand with no middle knuckles looks like:
23. Here's what all of someone's baby teeth look like after losing them:
24. And here's a baby tooth next to a wisdom tooth:
25. Here's how breast milk changes in color from just a few days after giving birth to weeks after:
26. Here's what it looks like to have supernumerary (aka extra) teeth:
27. If you have melanin in your skin, this is how the color comes back into your skin after a burn — aka in spots:
28. This is what a man without skin looks like, as seen in an anatomy museum:
29. You can see the difference a prosthetic eye makes here:
30. And here:
31. Here's how a bruise develops 36 hours after an injury (in this case, from a softball):
32. This is what "fire stains" or "toasted skin syndrome" looks like (it can occur from too much heat exposure — for example, from a heating pad):
33. This is how much the brain changes from age 12 to 22:
34. And this isn't really the human body, but it's so wild I had to include it...this is what a snake fang looks like after being pulled from your skin after getting bitten:
