Things you need to know

THINGS YOU NEED TO KNOW

1. An adult has about 5-6 liters of blood in his or her body.

2. We release about half a liter of gas from the intestines every day, what we call farts.

3. The only bone not connected with the rest of the skeleton is the hyoid bone. It lies at the root of the tongue.

4. The intestine villi, if spread out flat, will spread over an area of about three apartments.

5. Crabs have blue-colored blood. Their blood pigment contains copper, and not iron, which gives the red color to the blood.

6. The heart of an adult pumps around 7000 liters of blood through the body every day. This could fill about 35 bathtubs.

7. Most of the movement of our eyes takes place in the night while dreaming.

8. People can still feel pain, called phantom pain, in the amputated limbs. For instance, they feel pain in the right heel, although the right foot is amputated and is no longer there.

9. Every minute 250 children are born in the world.

10. A baby at birth weighs more than 2 billion times the weight of the fertilized egg cell, which was what the baby started.