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The world is full of scientific wonders. From the atomic building blocks of life to the deepest depths of space, there are many things to marvel at. The human body is a complicated work of art with a plethora of things we have no idea about. Whether it is the new height of the body in the morning or the number of heartbeats per day. How often do we think about how extraordinary our bodies are? There are millions of internal processes going on every second in these complex machines, all working together to keep us alive.
Our skin can regenerate itself to heal a paper cut. Our tongues let us taste the heat of a homemade sauce. And our eyes can see everything from blue skies to pink dots on a sweater. And these are just some of the amazing things your body does for you every day. Today we present the best facts about the human body.
Here is the list of the most interesting facts about the human body
- About 75% of human waste is made up of water. While we normally think of urine as the liquid part of human waste products, the truth is that what we think of as solid waste is actually mostly water as well. You should be thankful that most stools are fairly full of water, as the drier, harder stools are the ones that cause constipation and are much more difficult and sometimes painful to pass.
- Your left and right lungs are not exactly the same. The lung on the left side of his body is divided into two lobes, while the lung on the right side is divided into three. The left lung is also slightly smaller, which makes room for the heart.
- The human lungs contain nearly 1,500 miles of airways and more than 300 million alveoli.
- An average person breathes around 11,000 liters of air every day.
- Your stomach acid is strong enough to dissolve razor blades. While you certainly shouldn’t test your stomach’s strength by eating a razor blade or any other metal object, the acids that digest the food you eat shouldn’t be taken lightly. Hydrochloric acid, the kind found in your stomach, is not only good for dissolving that pizza you had for dinner, but it can also corrode many types of metals.
- Your sense of smell is about 10,000 times more sensitive than your sense of taste.
- About 80 percent of what we think of as taste is actually smell. Flavor is a combination of the perception of taste and smell.
- The brain uses more than a quarter of the oxygen used by the human body.
- The brain of an adult human weighs about 3 pounds (1.5 kg). Although it makes up only 2 percent of the body’s weight, it uses about 20 percent of its energy.
- If you smoothed out all the wrinkles in your brain, it would be flat the size of a pillowcase.
- Your heart beats about 100,000 times a day, 365,000,000 times a year, and more than a billion times if you live over 30.
- Grouping human blood types can be a difficult process and there are currently around 30 recognized blood types (or blood groups). You may be familiar with the more simplified “ABO” system that classifies blood types into O, A, B, and AB.
- A healthy adult human heart beats an average of 75 times in one minute.
- In one year, a human heart would pump enough blood to fill an Olympic swimming pool.
- If all the blood vessels in the human body were placed side by side, they would circle the Earth four times.
- The skin is the largest organ of the human body.
- The outer layer of skin is the epidermis, it is thickest on the palms of the hands and the soles of the feet (about 1.5 mm thick).
- A lot of the dust in your home is actually dead skin. Humans shed about 600,000 skin particles every hour.
- Humans have a stage of sleep that features rapid eye movement (REM) sleep. REM sleep makes up about 25 percent of your total sleep time and is often when you have your most vivid dreams.
- An eyelash lives about 150 days before it falls out.
- The smallest bone found in the human body is found in the middle ear. The staple bone (or stirrup) is only 2.8 millimeters long.
- The femur (thigh bone) is the longest bone in the human body.
- In addition to having unique fingerprints, humans also have unique tongue prints.
- Goosebumps evolved to make our ancestors’ hair stand on end, making them appear more threatening to predators.
- The blush is caused by a rush of adrenaline.
- The cornea is the only part of the body without a blood supply: it gets its oxygen directly from the air.
- The human body contains enough fat to make seven bars of soap.
- Between birth and death, the human body goes from having 300 bones to only 206.
- The small intestine is about 23 feet long.
- An average sized man eats about 33 tons of food in his lifetime, which is about the weight of six elephants.
- The nephrons, the filtering units of the kidney, cleanse the blood of the human body in about 45 minutes and send about six cups of urine (2,000 ml) to the bladder every day.
- You can’t breathe and swallow at the same time.
- The average person produces enough saliva in their lifetime to fill two swimming pools.
- There are about ten thousand taste buds on the human tongue, and in general, girls have more taste buds than boys!
- While you are awake, your brain produces enough electricity to power a light bulb.
- The left side of your brain controls the right side of your body and the right side of your brain controls the left side of your body.
- In camera terms, the human eye has about 576 megapixels.
- Our brain is programmed to erect the inverted image formed on our retina by the convex lens. A newborn baby sees the world upside down until his brain begins to erect it.
- You carry, on average, about four pounds of bacteria in your body.
- 50 percent of the power in your hand comes from your little finger.
- Sometimes the pain of scratching causes your body to release serotonin, a pain-fighting chemical. It can make the itch feel even more itchy.
- As people age, their skin becomes thinner, drier, and less elastic, which is why wrinkles begin to appear.
- An adult skin weighs about 3 to 4 kg.
- If you spread out your skin, it would be about 20 square feet, about the same size as a child’s bed sheet.
- The diaphragm, which is a thin membrane under the lungs, sometimes contracts, causing a sudden rush of air, which is interrupted by the closing of the throat. This is what we call hiccups.
- In case of injury under the skin, the blood vessels break and spread to the tissues near the injury. The dark color of the blood shows through the skin as a bruise.
- A runny nose is our body’s way of removing germs from our nose while we get colds and the flu.
- On average, the human body contains enough iron to make a nail 1 inch (2.5 cm) long.
- Nerve impulses to and from the brain travel as fast as 170 miles per hour. Have you ever wondered how you can react so quickly to things around you or why that stung finger hurts right away? It’s due to the lightning-fast movement of nerve impulses from your brain to the rest of your body and back, triggering reactions at the speed of a high-powered luxury sports car.
- Facial hair grows faster than any other hair on the body. If you’ve ever had a layer of stubble on your face when you went out at 5 o’clock, you’re probably pretty familiar with this. In fact, if the average man never shaved off his beard, he would grow over 30 feet in his lifetime, longer than an orca.
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