Monthly Archives: April 2014
178.WHAT ARE VARICOSE VEINS?
Elderly people and people who spend a great deal of time on their feet sometimes develop varicose veins. You may have noticed them on people who have this condition; the veins are swollen, twisted, and quite blue.
Varicose veins are veins that have lost their elasticity, a loss which causes them to swell and look twisted. The swelling occurs because the weakened walls of the veins can no longer withstand the pressure of the blood in the veins.
177.WHAT ARE HALLUCINATIONS?
There are many things that people sometimes claim they “see” that really aren’t there. They may have visions of “ghosts” or strange creatures. Sometimes little children claim they “saw” things that no one else did. Sometimes these are fantasies or day dreams; sometimes they are illusions.
There is a difference between an illusion and an hallucination. When a person has an illusion, there is something present that stimulates the eyes or senses. It can be verified, because other people see it, too. A mirage, for example, is a kind of illusion. But the main point is that something is there that causes the person to think he saw what he saw.
176.WHAT ARE CAPILLARIES?
There are all kinds of big roads and highways connecting big cities so that food and other necessary materials can reach them. But what about the small towns and little villages? They need food and supplies, too.
The little roads and byways that reach the small towns and villages are like the capillaries in the human body. As we know, blood is pumped out of the heart to all parts of the body and the big vessels through which this blood flows are known as the arteries.
