Anatomy & physiology/ Period 5
21 March 2010
Giardia lamblia exists in two forms, an brisk form c each(prenominal)ed a trophozoite, and an in fighting(a) form called a cyst. The active trophozoite attaches to the lining of the small intestine with a sucker and is creditworthy for causing the signs and symptoms of giardiasis. The trophozoite fagnot live long outside of the body; accordingly it cannot spread the infection to others. The inactive cyst, on the other hand, can exist for prolonged periods outside the body. When it is ingested, stomach acid activates the cyst, and the cyst develops into the disease-causing trophozoite. It takes ingestion of only ten cysts to typeface infection. Trophozoites are important not only because they cause disease, they also produce cysts that exit the body in feces and spread infection to others.[1]
The Giardia parasite lives throughout the world in all climates and conditions. The feces of animals and humans infected with giarda manipulate millions of guardian parasites. When an infected animal defecates, its giardia organisms are released into the environment and tolerate for additional unsuspecting hosts.
This means water, soil, food, or anything that the feces of quite a little or animals infected with guardian may have enter in contact with can infect anyone. It is important that men are washed frequently, especially after each intestine movement. For wilderness survivors, the most common means of contracting guardian is by drinking contaminated water. Animals such as beavers, muskrats, moose, deer and many others commonly defecate in or airless water. This serves to spread the guardian parasite to other animals throughout the area. Unfortunately, people are also to blame for the spread of Giardia. Many out of doors enthusiasts do not understand even the basics of proper human waste disposal and will often remedy themselves close to sources of water that...
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