Elephantiasis :: essays research papers fc

I did my report on filariasis, which ismore commonly cognise as elephantiasis.Elephantiasis is the late phase of filariasis. Filariasisis a tropical mosquito born epenthetic diseasecausing obstruction of the lymph vessels. In somepeople the posture of the worm causes a tissuereaction that causes the lymph flow to be blocked.This occlusion produces lymphedema which is aswelling and thunder mug eventually lead to a awfulenlargement of an extremity or organ. Whenelephantiasis follows repeated infection, parts ofthe body -- especially the legs -- become grosslyenlarged and the surrounding skin hardens andulcerates. Certain types of elephantiasis can betreated surgically. Elephantiasis of the legs isusually treated with elastic bandages and frequent tip of the legs. The leg and foot, may swellto elephantine size. There may be allergic reactionslike itching and localized swelling. The body mayto a fault react by causing calcium tissue to bedeposited approximately the worm, walling it off andeventually causing its death. In humans, the matureworm lives tightly coiled in the lymphatic vesselswhere they reproduce. The female holds thefertilized eggs in her body. later the embryos,called microfilariae, are discharged alive. Aninteresting feature of these worms is the periodicswarming of the microfilariae in the bloodstream.In most species swarming takes place at night. Theembryos can be taken up by an insect only whenthey are in a humans bloodstream. They developeinto pathogenic larvae in the insect, which is theintermediate host. These hosts are various generaof mosquitoes, notably A?des, Anopheles, andCulex. at heart 10 to 11 days after ingestion by ahuman skin they migrate to the lymphayic vessels