Human Body Facts
Pregnancy Facts
The world's first test tube twins are Stephen and Amanda Mays born June 5, 1981.
Some people drink the urine of pregnant women to build up their immune system.
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
Every day, over 1,300 babies are born prematurely in the USA.
During pregnancy, the average woman's uterus expands up to five hundred times its normal size.
Changing a cat's litter box can be dangerous to pregnant women, as cat feces sometimes carry a parasite that can cause harm to the developing baby.
Eyes Facts
We should never put anything in or near our eyes, unless we have a reason to use eye drops. We would only do that if our doctor or parent told us to use them.
Blinking helps to wash tears over our eyeballs. That keeps them clean and moist. Also, if something is about to hit our eye, we will blink automatically.
Our body has some natural protection for our eyes. Our eyelashes help to keep dirt out of our eyes. Our eyebrows are made to keep sweat from running into our eyes.
Our eyes are very important to us, and we must protect them. We don't want dirt, sand, splinters or even fingers to get in our eyes. We don't want our eyes to get scratched or poked. That could damage our sight!
Heart Facts
Women hearts beat faster than men.
Three years after a person quits smoking, there chance of having a heart attack is the same as someone who has never smoked before.
The human heart weighs less than a pound.
The human heart can create enough pressure that it could squirt blood at a distance of thirty feet.
The first open heart surgery was performed by Dr. Daniel Hall Williams in 1893.
Scientists have discovered that the longer the ring finger is in boys the less chance they have of having a heart attackSEX Facts
There are approximately 100 million acts of sexual intercourse each day.
The sperm count of an average American male compared to thirty years ago is down thirty percent.
An adult esophagus can range from 10 to 14 inches in length and is one inch in diameter.
Men sweat more than women. This is because women can better regulate the amount of water they lose.
The average amount of time spent kissing for a person in a lifetime is 20,160 minutes.
The average adult has approximately six pounds of skin.
Bone Facts
The smallest bone in the human body is the stapes bone which is located in the ear.
There are 54 bones in your hands including the wrists.
The only bone fully grown at birth is located in the ear.
The human face is made up of 14 bones.
The chances of getting a cavity is higher if candy is eaten slowly throughout the day compared to eating it all at once and then brushing your teeth.
If an identical twin grows up without having a certain tooth, the other twin will most likely also grow up with that tooth missing.
Brain Facts
Women are twice as likely to be diagnosed with depression than men in the United States.
The human brain has about 100,000,000,000 (100 billion) neurons.
From all the oxygen that a human breathes, twenty percent goes to the brain.
People who ride on roller coasters have a higher chance of having a blood clot in the brain.
Once a human reaches the age of 35, he/she will start losing approximately 7,000 brain cells a day. The cells will never be replaced.
It is not possible to tickle yourself. The cerebellum, a part of the brain, warns the rest of the brain that you are about to tickle yourself. Since your brain knows this, it ignores the resulting sensationOTHER Facts
The smile is the most frequently used facial expression. A smile can use anywhere from a pair of 5 to 53 facial muscles.
The slowest growing finger nail is on the thumb nail and the fastest growing is the finger nail on the middle finger.
The sensitivity of a woman's middle finger is reduced during menstruation.
The same amount of calories are burned by doing 6 sessions that are 5 minutes each of an activity and doing 1 session of that activity for 30 minutes.
The pectin that is found in apples aids in lowering cholesterol levels.
The most frequent season for most suicides to occur is in the spring. The winter months have the lowest number of suicides.
Hair Facts
On average, a man spends about five months of his life shaving.
On average, a hair strand's life span is five and a half years.
On average redheads have 90,000 hairs. People with black hair have about 110,000 hairs.
Next to bone marrow, hair is the fastest growing tissue in the human body.
In a lifetime, an average man will shave 20,000 times.
Humans have about the same number of hair follicles as a chimpanzee has.
Hair will fall out faster on a person that is on a crash diet.
The average human head weighs about eight pounds.
The reason why some people get a cowlick is because the growth of their hair is in a spiral pattern, which causes the hair to either stand straight up, or goes to a certain angle.
The reason why hair turns gray as we age is because the pigment cells in the hair follicle start to die, which is responsible for producing "melanin" which gives the hair colour.
The big toe is the foot reflexology pressure point for the head.
The loss of eyelashes is referred to as madarosis.
The longest human beard on record is 17.5 feet, held by Hans N. Langseth who was born in Norway in 1846.
The fastest growing tissue in the human body is hair.
The average human scalp has 100,000 hairs.
Hair and fingernails are made from the same substance, keratin.
Hair is made from the same substance as fingernails.
