7. Blue blood
You must still remember all those illustrations in your textbooks where you saw how blood is delivered to the heart. There were red veins and blue blood vessels all over the human body. Nowadays only kids may believe that blood can be blue! The blue color that schemes show is used to demonstrate the difference in how blood flows. The fact is that blood is red regardless how it is delivered and where it flows. Blood can be dark red when it is deoxygenated.
8. Nerve Cells Do Not Restore or Regenerate
We have always been told that nerve cells cannot restore or regenerate. That’s the main reason why we should not feel upset, annoyed or angry. If you are a person who can ignore all the negative emotions, your nerve cells still die just because this is a natural process. New nerve cells appear all the time and our brains function properly due to the chemicals rather than cells themselves. Only if there is some sort of imbalance in chemicals will you experience trouble with nerve cells. The quantity of cells is not something to worry about for sure!