Fascinating Facts about Biology

The human body contains over 37 trillion cells.

DNA, the blueprint of life, is found in the nucleus of every cell.

The heart of an average adult beats about 100,000 times a day.

Humans share 98.7% of their DNA with chimpanzees.

The smallest bone in the human body is the stapes bone in the ear.

The brain is the most energy-consuming organ, using about 20% of the body’s total energy.

The surface area of the lungs in an adult is approximately equal to a tennis court.

The sense of smell is linked to memory more than any other sense.

The human eye can distinguish about 10 million different colors.

The longest muscle in the human body is the sartorius muscle.

Neurons in the brain can transmit signals at a speed of up to 268 miles per hour.

The liver is the largest internal organ in the human body.

Humans shed and regrow their skin about 1,000 times in a lifetime.

The average person blinks about 17,000 times a day.

The human body produces about 25 million new cells every second.

The human nose can distinguish between 1 trillion different scents.

The taste buds on the tongue renew themselves every 10 days.

The average person walks the equivalent of three times around the Earth in a lifetime.

The human skeleton is made up of 206 bones.

Humans are the only animals that shed emotional tears.

The human brain can hold about 2.5 petabytes of information, equivalent to 3 million hours of TV shows.

Fascinating Facts about Biology part 2

The average person produces about 25,000 quarts of saliva in a lifetime.

The thumb has its own pulse.

Humans are the only species known to blush.

The average human body consists of about 7 octillion atoms.

The human body has enough iron to make a 3-inch-long nail.

The stomach cells secrete hydrochloric acid strong enough to dissolve razor blades.

The average person has about 60,000 miles of blood vessels in the body.

The surface area of the small intestine is around 2,700 square feet.

The human body can survive without a stomach, but not without a small intestine.

The human DNA can stretch from the Earth to the Sun and back more than 600 times.

The heart of an embryo starts beating just three weeks after conception.

The average person loses about 4 kilograms (8.8 pounds) of dead skin cells in a year.

Humans have fewer chromosomes than a potato (46 vs. 48).

The fastest muscle in the human body is the one that closes the eyelids, called the orbicularis oculi.

The human liver can regenerate itself fully within about six months.

The average human has 206 bones, while a newborn baby hasaround 270 bones which fuse together as they grow.

The human brain is 73% water.

A person’s ears and nose never stop growing.

The left lung is smaller than the right lung to make room for the heart.

Humans are born with 270 bones but only have 206 in adulthood due to fusion.

There are more bacteria in a person’s mouth than there are people in the world.

The human body has enough carbon to make 9,000 pencils.

The smallest muscle in the human body is the stapedius muscle in the ear.

The human body produces enough heat in 30 minutes to boil half a gallon of water.