Our body is an amazing thing to know. Following are a few astonishing facts about our body.
1. Our brain has around 100 billion cells. Unlike blood cells, brain cells are never replaced when they die. Average human brain is just 2% of body weight but consumes 20% of total oxygen inhaled.
2. Eye infections are hard to control once they spread. The cornea of eye does not have any blood vessels in it therefore internal antibiotics are not helpful in corneal infections as they are carried by blood. Local eye drops are most effective.
3. You have around 60000 kms of blood vessels network in the body. If an adult man adds 1 kg weight, he shall add another 1000 kms of blood vessels and blood will have to work harder to pump the blood to these parts.
4. On an average, a woman gets 300 chances to get pregnant whole of her life. A woman on an average has around 300 menstrual cycles in her life span.
5. When we hear a very loud sound, our mouth opens in order to balance the vibration pressure on ears otherwise our eardrums may get damaged. Our ears, eyes, nose and mouth are all connected internally.
6. Life span is directly related to metabolic rate. Animals with proportionately more metabolic rate shall die early. Snakes, tortoise and other such animals can lower their metabolic rates to such an extent that they can live without food for months together, especially during hibernation and aestivation.
7. Our stomach can digest meat of other animals. Why does not it digest itself? There is a layer of mucous in stomach that prevents the action of strong Hydrochloric acid and other digestive enzymes on the stomach itself. When this mucous layer is damaged due to any cause, it results in ulcers.
8. An average human body has just 5g of iron in it which is mostly in blood.
9. Babies are born with 300 bones which get reduced to about 206 in adults. This makes babies flexible. Small bones of babies get fused to form bigger bones. This process helps forensic scientists to predict the age, especially of youngsters.
10. The largest bone in human body is the thigh bone. And the smallest bone is the middle ear bone called ‘stapes’ which is 1/3rd of a centimeter and has 3g average weight. Damage to this tiny bone can result in balance problems and hearing loss.
