More Body Facts

The human brain uses as much power as a 10-watt light bulb.
The word “organ” comes from an old Greek word, organon, which means “tool” or “instrument.”
There are so many nerve cells in a human brain that it would take almost 3,000 years to count them.
An adult’s skin weighs between 8 and 11 pounds (3.6 to 5 kg). Its surface area is about 18-22 square feet (1.7 to 2 sq. m).
The longest bone in an adult human is the thighbone, measuring about 18 inches (46 cm). The shortest bone is in the ear and is just 0.1 inches (.25 cm) long, which is shorter than a grain of rice.

Six More Body Facts

A human skeleton renews itself completely every 10 years.
By the time a person reaches 70 years old, he or she will have consumed over 12,000 gallons of water.
The body can detect taste in .0015 seconds, which is faster than the blink of an eye.
Every hour, humans shed about 600,000 particles of skin, or about 1.5 pounds every year. By the time a person is 70 years old, they will have lost about 105 pounds of skin.
There are ten times more bacteria cells in your body than human cells.

The brain contains 86 billion nerve cells joined by 100 trillion connections. This is more than the number of stars in the Milky Way.

Seven More Body Facts

In an adult human, 25% of bones are in the feet.
The gluteus maximus in the buttocks is the body’s largest muscle.
A human’s ears and nose never stop growing.
A human’s little finger contributes over fifty percent of the hand’s strength.
If a human being’s DNA were uncoiled, it would stretch 10 billion miles, from Earth to Pluto and back.
There are more than 100,000 miles of blood vessels in your body.

For an adult human, taking one step uses up to 200 muscles. I am already tired just thinking about it.

Six Body Facts

The lining in a person's stomach is replaced every 4 to 5 days to prevent it from digesting itself.
An adult human small intestine is about 18 to 23 feet long, which is about four times as long as an adult is tall.
Semen normally contains 1-8 billion sperm per fluid ounce (140-300 million sperm per millimeter).
Feet have about 500,000 sweat glands and can produce about a pint of sweat a day.
A human sneeze can travel about 100 mph or more.
The average human produces 25,000 quarts of saliva in a lifetime, enough to fill two swimming pools.

Interesting Body Facts

The adult body is made up of 100 trillion cells, 206 bones, 600 muscles, and 22 internal organs. Every square inch of the human body has about 19 million skin cells. Every hour about 1 billion cells in the human body must be replaced.

The cornea is the only part of the body with no blood supply – it gets its oxygen directly from the air.

The largest bone in the human body is the femur. It can support 30 times the weight of a person's body.

Embryos develop fingerprints three months after conception.

The average adult has five million pores on their body with approximately 20,000 on their face alone. Pores are critical in allowing skin to breathe and helping the body get rid of oils and toxins.

Five Fascinating Body Facts

If you take every vessel in a body and put them end to end, it would be a length of 96,000 kilometers or 60,000 miles in children and 100,000 miles in adults.

There are more bacteria in a human mouth than there are people in the world.
Canadian scientists revealed that the female heart runs 10 beats a minute more than the male heart.


Messages from the human brain travel along nerves at up to 200 miles an hour or 322 km/h.

By the age of 60, people usually lose up to 40% of their sense of taste.