LIBRARY BLOG
Ten Interesting Facts About the Human Body
The human body is a fascinating creation made up of all kinds of different systems, cells, and elements. All of these things preform special functions that work together each day to keep us alive and our bodies healthy. Here are ten interesting facts about the human body.
Every single one of the five million hairs on the human body has its own muscle called the arrector pili muscle.
Although our heads seem small, each human skull holds 22 bones!
Over 700 different species of bacteria have been found in the human mouth.
The hardest substance in the body is found on the crown of your teeth, and it is called enamel.
The farthest distance a human eye can see is called the Andromeda Galaxy which is about 2.5 light-years away.
The water within the human body is as salty as seawater because sodium helps to maintain the body’s water balance.
The ear contains three of the tiniest bones of the human body, including the stirrup which is about the size of a grain of rice.
The heart pumps out about a cup of blood around 70 times a minute, and it can increase to meet the body cells’ demand.
A child’s kneecaps do not harden into bone until they are around three years of age.
Once a child turns nine, its brain is already 95% of the size of an adult’s.
Recommended Books
Source
- Claybourne, Anna, et al. Human Body!: Your Amazing Body as You’ve Never Seen It Before. DK, Smithsonian, 2017.
-Emily Daigle, Youth Services Clerk