Do you know your body chemistry? (2)

About 70% of the body’s weight is water and over half of it is contained inside the cells themselves.  Most of the remainder is a bath which surrounds the cells.  A fraction of it forms the liquid part of the blood.

As the blood courses through the tiny capillaries that pass close to every cell, some of the liquid diffuses out, carrying nutrients into the cellular bath to provide the materials cells need for life.

At the same time a bit of the bath containing waste products of the cells is drawn out into the bloodstream and goes to the kidneys, where it is purified.



2 lungs to breathe?

Every day your body uses about 90 gallons of pure oxygen.  To separate this gas from the air, the innate intelligence of the body uses your lungs.

The lungs contain 500,000,000 tiny air sacs with a surface area of 50 to 60 square MILES!  The walls of the sacs and of the blood vessels that wind around and around each one are one cell thick.  Molecules of oxygen leave the air in the sacs and pass right through these 2 one-cell walls into your blood.

At the same time, molecules of carbon dioxide gas (which your body must get rid of) go from your blood into the air sacs and are exhaled with your breath.  This process is called diffusion.



Do YOU know your heart? (2)

Your blood is made up of billions of  cells floating in a liquid called plasma.  It’s like a river that flows to every part of your body through your arteries, veins and capillaries.

The red cells in your blood stream are like freight ships that carry oxygen from your lungs to your tissues and take waste gas (carbon dioxide) from your tissues back to your lungs.

The white cells in your blood stream are like Coast Guard boats that are always on alert and act like dams to shut off the flow of blood whenever you cut yourself.  They form tiny threads called fibrin which trap the red cells forming a clot or dam.

A crop of blood only 1/25th of an inch in size contains about 5,000,000 red blood cells, 7,000 white blood cells and thousands of platelets.  60,000 of these blood cells could be put on the head of a pin!

Amazing isn’t it?

River of life (2)

The body’s river retains an age-old tie to Earth‘s waters.  Like it’s prototype the ocean, blood is a crowded sea, teeming with a diverse society of cells that carry out specific tasks and coexist in strict proportions.  So critical is this balance that a decline in the population of any one element can endanger life.

The red blood cells constitute about 45% of blood’s volume.  EVERY red blood cell contains about 270,000,000 complex proteins to carry oxygen to our body parts.  In turn, so many red cells crowd the bloodstream of a single human that stacked, these cells could reach 31,000 miles in the sky.

Amazing isn’t it?

Is there a bug going around? (3)

Science News (November 1996) reports that cold viruses respond to a chemical released by cancer cells within the human body attacking the cancer cells, and ingesting them.  This basically means that to have a “cold” is good to fight cancer within human being.  Studies done in the Ukraine reveal that people having 3 to 4 “colds” per year have lesser chances of developing cancer.

When cold viruses penetrate the mucus blanket, their reproduction kills cancer cells.  As these cells die, they release several substances, on of which is called histamine.  Histamines cause the tiny blood vessels, or capillaries, in the infected area to expand.  Capillary expansion stimulates increased blood flow into the area.  This increased blood volume carries with it white blood cells and antibodies that attack the virus.

Amazing isn’t it?