Human Biology Fun Facts

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This letter contains some very interesting facts about human biology.

A fun fact is a piece of knowledge that is engaging or enjoyable. People frequently introduce a fun fact, sometimes in the form of clever and stinging insights, with the term itself since you wouldn't realize it was a fun fact otherwise.

• Adult lungs have a surface area of around 70 square metres.

• Human lungs contain almost 1,500 miles of airways and over 300 million alveoli.

• An average person breathes in around 11,000 litres of air every day.

• Your sense of smell is around 10,000 times more sensitive than your sense of taste.

• Around 80 per cent of what we think is taste is actually smell. Flavour, is a combination of taste and smell perception.

• The brain uses over a quarter of the oxygen used by the human body.

• The brain of an adult human weighs around 3 pounds (1.5 kg). Although it makes up just 2 per cent of the body’s weight, it uses around 20 per cent of its energy.

• Your heart beats around 100,000 times a day, 365,00,000 times a year and over a billion times if you live beyond 30.

• In one year, a human heart would pump enough blood to fill an Olympic size pool.

• If all the blood vessels in the human body were laid end to end, they would encircle the Earth four times.

• The outer layer of your skin is the epidermis, it is found thickest on the palms of your hands and soles of your feet (around 1.5 mm thick).

• A large amount of the dust in your home is actually dead skin. Humans shed about 600,000 particles of skin every hour.

• Humans have a stage of sleep that features rapid eye movement (REM). REM sleep makes up around 25 per cent of total sleep time and is often when you have your most vivid dreams.

• An eyelash lives for about 150 days before it falls out.

• The smallest bone found in the human body is located in the middle ear. The staples (or stirrup) bone is only 2.8 millimetres long.

• 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 just 206.

• The small intestine is roughly 23 feet long.

• An average sized man eats about 33 tons of food in his/her life time which is about the weight of six elephants.

• Nephrons, the kidney’s filtering units, clean the blood in the human body in about 45 minutes and send about six cups of urine (2000 ml) to the bladder every day.

• One quarter of your bones are in your feet.

• 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 awake, your brain produces enough electricity to power a lightbulb.

• In camera terms, the human eye is about 576 megapixels.

• You carry, on average, about four pounds of bacteria around in your body.

• 50 percent of your hand strength comes from your little finger.

• An adult skin weighs around 3 to 4 kgs.

• If you spread out your skin, it would measure around 20 square feet in size, about the same size as a child’s bed sheet.

• On average, human body contains enough iron to make a nail 2.5 cm (1 inch) long.

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Written by: Mohamed Alfarsi 12A2

Thanks for reading.

-HumanBiologyFunFacts