Cells and Things

November 12, 2012

Cells and Things

So much can be seen these days with the aid of microscopes and modern optical devices hooked into computers that it’s no longer true to say that most of the things occurring on and in our bodies can’t be seen. However some of us prefer the good old days, there aren’t a lot of pretty sights when bacteria, dying cells and skin flakes are involved.

It takes about a month for us to regrow new skin. Every 27 days we shed and rebuild our outer skin cells. This allows the skin to remain in good condition and keep its strength. Remember that it’s the skin that holds our internal organs inside! The average person can shed over half a million flakes of skin every hour of every day. It can be more if there is a skin condition such as sunburn or dry skin. Dust mites love to eat the flaky bits that have been discarded.

We all have bacteria covering our bodies. The average amount is roughly 32 million per square inch. The vast majority is harmless and some are even known to help us stay healthy.

We are believed to have at least 10 trillion human cells making up our body, some people say that figure should be nearer 50 trillion. So when you are told that 300 million cells die every minute you realize that how complex we really are, and remember that lots of new cells are produced daily to maintain the organs and do running repairs on the body. The figure given is 300 million every day.

Everybody knows that fingerprints are unique but a lesser known fact is that tongue prints are unique too. So keep your mouth shut if you are considering carrying out a crime.

Lips are not just bits of skin they contain lots more capillaries than skin, hence the redness of lips. When it’s cold or a person has lost a lot of blood the lips take on a blueness because the capillaries constrict which makes the blood lose oxygen changing the color from red to blue.

Blood comes in different types and the most common type is O. Type O can be given to people requiring blood even if they are type A or B. And the rarest type of blood is called A-H and it has only been seen in 100 or people. It is also known as Bombay blood because this is where it was discovered.

If you have cut a finger and put it in your mouth then you will have noticed a metallic taste. All healthy people taste similar, it’s the iron in our blood that gives the taste. If there was a process to remove all of the iron from our bodies we would be very ill with anemia, but we would also have enough iron to make a 3 inch nail.

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