22 Really Surprising Facts About The Human Body
Our body is truly amazing, and we should know about it. Get to know the most interesting things about the human body. Check out these 22 really surprising facts about the human body.
1. Newborn babies are actually born with over 90 more bones than they’ll have as adults. Many bones grow together as babies become older.
Source: Ask Biologist
2. The human embryo’s first development is the anus, so you might say we’re all a bunch of buttholes from the start.
3. You are shorter when you go to bed than you are when you wake up.
Source: About Health
4. And, starting at around age 30, you lose about half an inch in height every ten years.
5. There is a type of tumor that can grow teeth and hair.
6. Your heart can keep beating outside of your body.
TransMedics keeps donor hearts beating en route to transplant patients.
7. Your heart pumps with enough pressure to squirt blood 30 feet across a room.
Source: ABC News
8. There are mites called Demodex living in your eyelashes. They embed their heads into your hair follicles.
9. The number of bacteria in your mouth can easily exceed the number of people who live on Earth (more than 6 billion).
10. If you took all of the blood vessels out (veins, arteries, and capillaries) of an average child and laid them out in one line,the line could circle the globe more than twice.
The line would be over 60,000 miles long! An adult’s vessels would be closer to 100,000 miles long!
Source: The Franklin Institute
11. Humans are bioluminescent. In short, we glow. But the light is too weak to be seen by the human eye.
The brightest light is emitted from the cheeks, forehead and neck.
Source: The Guardian
12. Pregnant women’s brains shrink during pregnancy and take six months post-delivery to get back to its previous size.
13. Tears have different compositions depending on the reasons they are shed – like, from sadness, or happiness, or an onion.
14. Some people dream only in black and white.
In the 1940s, studies showed that 75% of Americans reported “rarely” or “never” seeing any color in their dreams. Experts say it has to do with growing up with black and white TV. These days, that number is down to 12%.
15. You will lose about half of your taste buds by age 60.
Source: Read all about it
16. Humans have ten times more bacteria than human cells.
Changes in these microbial communities may be responsible for digestive disorders, skin diseases, gum disease and even obesity.
17. In rare cases, people who have sustained injuries to their right anterior cerebral hemisphere will develop “Gourmand syndrome”: an eating disorder in which the person becomes obsessed with eating and thinking about fine foods.
18. People with Exploding Head Syndrome will hear a loud bang in their heads, like a bomb exploding, right as they’re falling asleep.
19. Heartbreak is more than a metaphor. Broken Heart Syndrome mimics a heart attack and is spurred by stressful or tragic situations.
20. When you blush, the lining of your stomach also turns red.
21. Kissing fights cavities.
22. Humans, like all mammals, have a “diving reflex” which instinctively shuts down certain parts of the body to conserve energy when submerged in cold water.
Other mammals use it for hunting or diving, but we use it to survive in near-drowning scenarios.