SOME OF THE MANY THINGS YOU DIDN’T KNOW ABOUT THE HUMAN BODY

-The only part of the body that has no blood supply is the cornea of the eye. It receives oxygen directly from the air.
-The human brain has a memory capacity which is the equivalent of more than four terabytes on a hard drive.
-A newborn child can breathe and swallow at the same time for up to seven months.
-Your skull is made up of 29 different bones.
-Nerve impulses sent from the brain move at a speed of 274 km/h.
-A single human brain generates more electrical impulses in a day than all the telephones of the world combined.
-The average human body contains enough sulphur to kill all the fleas on the average dog, enough carbon to make 900 pencils, enough potassium to fire a toy cannon, enough fat to make seven bars of soap and enough water to fill a 50-litre barrel.
-The human heart pumps 182 million litres of blood during the average lifetime.
-50,000 cells in your body died and were replaced by new ones while you were reading this sentence.
-The human embryo acquires fingerprints within three months of conception.
-Women’s hearts beat faster than men’s.
-A man named Charles Osborne hiccupped for a total of 68 years.
-Right-handed people live, on average, nine years longer than left-handed people.
-About two thirds of people tilt their head to the right when kissing.
-The average person forgets 90% of their dreams.
-The total length of all the blood vessels in the human body is about 100,000 km.
-On average, a person’s respiration rate is one third higher in spring than in autumn.
-By the end of a person’s life, they can recall, on average, around 150 trillion pieces of information.
-We lose 80% of our body heat from the head.
-When you blush, your stomach also turns red.
-A feeling of thirst occurs when water loss is equal to 1% of your body weight. The loss of more than 5% can cause fainting, and more than 10% causes death from dehydration.
-At least 700 enzymes are active in the human body.
-Human beings are the only living things which sleep on their backs.
-The average four-year-old child asks 450 questions a day.
-Not only human beings, but also koalas have unique finger prints.
-Only 1% of the bacteria can result in the human body becoming ill.
-Everyone alive on Earth could comfortably be placed into a cube with sides 1000 meters long.
-The scientific name for the belly button is the umbilicus.
-Teeth are the only part of the human body which cannot heal themselves.
-On average, a person needs seven minutes to fall asleep.
-Right-handed people chew most of their food on the right side of their mouth, whereas left-handed people do so on the left.
-Only 7% of people are left-handed.
-The fragrance of apples and bananas can help a person to lose weight.
-If allowed to grow for their whole lifetime, the length of someone’s hair would be about 725 kilometres.
-Out of all the people who can move their ears, only one third of them are able to move just one ear.
-During their lifetime, a person will on average accidentally swallow eight small spiders.
-The total weight of the bacteria in the human body is 2 kg.
-99% of the calcium contained in the human body is in one’s teeth.
-Human lips are hundreds of times more sensitive than the tips of a person’s fingers.
-A kiss increases a person’s pulse to 100 beats per minute or more.
-The total strength of masticatory muscles on one side of your jaw is equal to 195 kilograms.
-A person passes on 278 different types of bacteria to another person when they kiss them. Fortunately, 95% of them are not harmful.
-Parthenophobia is a fear of virgins.
-If you collected all the iron contained in the human body, you would get just a small cog, big enough only for use in your watch.
-There are more than 100 different viruses which cause a cold.
-If someone kisses another person for a certain amount of time, this is much more effective in terms of hygiene than using chewing gum, as it normalises the level of acidity in your oral cavities.
-You can lose 150 calories per hour if you hit your head against the wall.
-Human beings are the only animals which can draw straight lines.
-Human skin is completely replaced about 1,000 times during a person’s lifetime.
-A person who smokes a pack of cigarettes a day is doing the equivalent of drinking half a cup of tar a year.
-Women blink about two times less often than men.
-The structure of the human body contains only four minerals: apatite, aragonite, calcite, and crystobalite.

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