|
Author Question: Security of nuclear resources and the safe storage of nuclear wastes A) remain a global ... (Read 61 times) |
The human body produces and destroys 15 million blood cells every second.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.