Learning

At my school I am learning about the human body, so I decided to make a list with facts I found in books that talk about the human body.

Facts

From Inside Human Body (by Dr. Aron Bruhn)

• Unlike most organs in the body, you have two kidneys.  Even if one of them is damaged or removed, your other kidney can keep on doing its job.
• After you are born, the umbilical cord is tied off and cut. As you grow that stump of tissue becomes a bellybutton.
• When woman is born she already has all the egg cells she will ever make.
• People who need glasses have muscles that are either too tight or too loose to allow the lens to focus well.

From Horrid Henry's Bodies (By Francesca Simon)

• In Victorian times, you'd been told to brush your hair a hundred times a day!
• A giraffe has such a long tongue (53 cm)  that it can touch its ear.
• There are 100,000 muscles in an elephant's trunk, while you have only 650 skeletal muscles in your whole body.
• The brain stops growing at the age of fifteen.
• Your fingerprints are completely unique; even identical twins have different prints.

Do you like learning learning about the human body? What's your favorite system? My favorite system is the respiratory system. 

Me, Zoe Self