Multicellular Parasites of Human

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Multicellular Parasites of Human

Multicellular Parasites of Human - These parasites are the roundworms and flatworms, commonly found through out the world. They range in size from the tiny flukes to the tapeworms that sometimes reach 20 feet in length.Due to their infectious nature, they are considered in microbiology. Together with the unicellular protozoa they constitute the discipline known as parasitology.

Multicellular parasites are grouped in two phyla of animal kingdom: platyhelminthes (flatworms) and nemathelminthes (roundworms). The former have a broad or flat body, whereas the latter have a long threadlike appearance.

The flatworms include the cestodes, known as tapeworms and the trematodes, the flukes. The life cycle of the parasitic worms involves several hosts. The final host definitive host is the one in which the adult sexually mature is developed.

The adults usually produce eggs that are released from the body after fertilisation. The eggs develop into larvae in one or more intermediate hosts. The cycle is completed when the larvae reach again to the human body by water or soil contact or by consumption of contaminated food or water.

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Pinworm Disease Roundworm Disease Hookworm Disease Filiariases Tapeworms Scolex, Proglottids, Gravid Proglottids Flukes, Miracidium, Cercaria, Metacercaria Beef and Pork Tapeworm Diseases Liver Fluke Diseases List of Human Diseases Caused by multicellular Parasites

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