What are hemorrhoids? A precise definition of hemorrhoids does not exist, but they can be described as masses or clumps (“cushions”) of tissue within the anal canal that contain blood vessels, supporting tissue made of muscle and elastic fibers. The anal canal is the last four centimeters through which stool passes as it from the rectum to the outside world goes.
Although most people think hemorrhoids are abnormal, they are present in every human being. It is only when the hemorrhoidal cushions enlarge that hemorrhoids can cause problems and be considered abnormal or a disease.
Although hemorrhoids occur in everyone, they become large and cause problems in only 4% of the general population. Hemorrhoids that cause problems equally in men and women, and found their prevalence peaks between 45 and 65 years.
What are hemorrhoids?
- To know what hemorrhoids are to see the anatomy of hemorrhoids:
The arteries carry blood to the anal canal descend into the canal from the rectum above and form a dense network of arteries that communicate with each other around the anal canal. Due to this rich network of arteries, hemorrhoids blood vessels have a supply of the arterial blood. This explains why bleeding from hemorrhoids is bright red (arterial blood) rather than dark red (venous blood), and why bleeding from hemorrhoids occasionally can be severe. The blood vessels that supply the hemorrhoidal vessels pass through the supporting tissue of the hemorrhoidal cushions.
The anal veins drain blood away from the anal canal and the hemorrhoids. These veins drain in two directions. The first direction is upwards in the rectum, and the second is down below the skin around the anus. The gyrus is a line within the anal canal, which denotes the transition from the anal skin (anoderm) to the lining of the rectum. What are hemorrhoids?
What are hemorrhoids?
- To know what hemorrhoids are seeing the formation of hemorrhoids:
If the hemorrhoid originates (rectal) at the top side of the anal canal, it is called internal hemorrhoids. When it comes to the lower end of the anal canal near the anus, it is called an external hemorrhoid. Technically, the distinction between internal and external hemorrhoids, on the basis of whether the hemorrhoid originates above or below the dentate line (internal and external respectively) were prepared.
As previously explained, the upper anal canal to hemorrhoids cushion in the blood vessels and the supporting fabric are made of. There are oriented generally three major hemorrhoidal cushions right rear, right front and left lateral. In the formation of enlarged internal hemorrhoids, the vessels of the anal cushions swell and the supporting tissues increase in size. Bulging the mass of tissue and blood vessels extending into the anal canal, where it can lead to problems. Unlike internal hemorrhoids, it is not clear how external hemorrhoids form.
This is a general statement about: