Friday, January 16, 2009

Amazing Human Body Facts

In one square inch of skin there are four yards of nerve fibers, 1300 nerve cells, 100 sweat glands, 3 million cells, and 3 yards of blood vessels.

50,000,000 of the cells in your body will have died and been replaced with others, all while you have been reading this sentence.

The adult heart beats about 40,000,000 times a year

There are 2.5 trillion (give or take) of them in your body at any moment. To maintain this number, about two and a half million new ones need to be produced every second by your bone marrow. That's like a new population of the city of Toronto every second. Considering all the tissues and cells in your body,

25 million new cells are being produced each second. That's a little less than the population of Canada - every second!

A whole lot of shedding--A person sheds about 50 million dead skin cells every day. In about 4 years a person sheds their own body weight in skin cells.

Capillaries -- Capillaries are tiny blood vessels(tubes) that carry blood to all parts of the body. The human body contains about 60,000 miles of capillaries. That's enough to reach around the earth 2 1/2 times.

source: Usborne Facts and Fun About Animals and Science

Fast production -- The human body makes about two million red blood cells every second.
source: Whelmers, Science Demonstrations That Spark Your Imagination, Steven L. Jacobs

10% of human dry weight comes from bacteria.

There is more bacteria in your mouth than the human population of the United States and Canada combined.

Every square inch of the human body has an average of 32 million bacteria on it.

The DNA helix measures 80 billionths of an inch wide.

It takes 17 muscles to smile and 43 to frown.

There are more living organisms on the skin of a single human being than there are human beings on the surface of the earth.

The surface area of a human lung is equal to that of a tennis court.

Monday, January 5, 2009

Benefits of eating strawberries.......

What's so nutritionally good about strawberries?
Strawberries contain a range of nutrients, with vitamin C heading the group. They also contain significant levels of phytonutrients and antioxidants, which fight free radicals. These antioxidant properties are believed to be linked to what makes the strawberry bright red.

So what are these weird free radicals? Free radicals are elements that can damage cells, and they are thought to contribute to the formation of many kinds of cancer.

In addition to vitamin C, strawberries also provide an excellent source of vitamin K and manganese, as well as folic acid, potassium, riboflavin, vitamin B5, vitamin B6, copper, magnesium, and omega-3 fatty acids.

So many uses for strawberries!
Strawberries are among the most versatile of fresh fruits. Unfortunately, they are quite perishable as well. So purchase fresh strawberries only a few days before they are to be eaten. When strawberries are in season locally this is rarely a problem. But at other times of the year, it may be necessary to make due with frozen strawberries, which lose much if not all of their nutrition.

At the produce section choose strawberries that are plump firm and free of mold and have a deep red color. Unlike other fruits, strawberries do not continue to ripen after they are picked, so be sure to choose the ripest, reddest strawberries, as they will provide the best taste and the highest nutrient density. Many people find that medium sized strawberries are sweeter and more flavorful than larger ones. When buying pre-packaged strawberries, be sure that the berries have not been packed too tightly, as this could cause them to be crushed or otherwise damaged.

Handle strawberries properly and store them well after they have been purchased. Like all fruit, strawberries should be washed thoroughly prior to eating or storage. Any strawberries that show signs of mold should be discarded at once, as they will contaminate the remaining strawberries. The strawberries should be placed in a bowl, covered with plastic wrap, and kept in the refrigerator. Fresh strawberries will keep in the fridge for a few days.