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10 interesting things about human body
10 Interesting things about human body
We have knowledge about the human body but however we do not know about it much. Now you can read some interesting facts about this complex system which we call the body.
The human body is full of interesting things, amazing facts which seem to be impossible. But however - it is all true - and the human body works as a well-oiled machine.
You have probably already question yourself about in the human body. How many bones are in the human body, which is the smallest bone, how much is brain weight, how long nails grow ... we gather the most interesting facts about the human body in this place to teach while having fun reading about it.
Unnecessary parts of the human body
Do we really need little toe? Have question yourself that? Yes, our body has some not necessarily needed parts, sometimes redundant components that are thousands of years and even longer in the past had their own function and there are unnecessary now.
- Wisdom teeth
- Body hair in some places
- Area of the adult lungs is more than 70 square feet.
- Left and right lung are not the same size.
- The average person inhales about 11,000 liters of air per day.
- In the lungs there are over 300 thousand million capillaries (tiny blood vessels). If we sewed them together we will get a vein, long 2400 kilometers.
- We have a unique fingerprint. We also have a unique tongue print.
- Nose and ears grow whole life.
- Earwax is absolutely necessary if we want healthy ears.
- The nose can detect an average of 10 thousand different smells.
- Human feet can produce 500 milliliters of sweat per day.
- We are farting about 14 times a day on average - depending on diet.
- During our life time we produce so much saliva to fill two Olympic swimming pools.
- When you sneeze, air exhaled through the mouth at a speed of 160 kilometers per hour.
Eyes - a pair of magical assistants
- On an average the human eye blinks of 4,200,000 times a year.
- Children blinked once or twice per minute, while adults at least 10 times.
- Muscle that helps sharpening a focus in the eye moves one hundred thousand times a day. If you wanted to do the same strenuous exercise with your feet you should walk a distance of 18 kilometers.
- 90% of people gets information through the visual contact - so we can say that we are visual creatures.
- Blood cells complete circle around the body in 60 seconds.
- Red blood cells carry oxygen. They are formed in the bones.
- Life cycle of red blood cells is from three to four months.
- Every second is killed around two million red blood bodies but the body immediately replace with new ones.
- Man has 206 bones in the body.
- The smallest human bones are the three tiny bones in each ear. Their task is to transmit sound vibrations from the eardrum to the inner ear. They are called malleus, anvil and stirrup because of characteristic shape.
- The largest bone in the human and the animal body is the femur. It length is from person to person varies slightly, measuring about a quarter of the height.
- The skull is one big, detached bone, but is made up of 22 small bones that are united. The only freely movable bone is lower jaw.
Heart - the engine of our body
- Heart beats about 100,000 times a day, 36,500,000 times a year.
- The heart of an adult hits about 70 times per minute, slightly faster in women than in men.
- When we are unconscious, only our heart works.
- Surface of our skin is around 1.5 to 2 square meters and is the largest and heaviest organ of our body.
- All skin of our body weighs approximately ten kilograms.
- Every minute 30-40 thousand dead skin cells falls off of your body.
- The brain does not feel pain (no pain sensory cells).
- 80% of the brain is water.
- Interestingly the brain is more active when we sleep as during the day when we are active!
- Adult human brain weighs about 1.5 kilograms.
This is only a selection of some interesting thing - the human body has them much more than that!