In this article we will discuss about the external morphology of roundworm or Ascaris. Ascaris resembles an ordinary earthworm and is the largest intestinal nematode parasitising man. It is milk-white in colour but presents a reddish-yellow shade. Body is elongated, cylindrical, and gradually tapering at both ends. The females are usually 20-25 cm in length and 5 mm in diameter [...]
In this article we will discuss about the morphology of lung fluke (Paragonimus Westermani). Adult lung fluke is thick, fleshy, oval in shape, reddish brown in colour, about 8-12 mm long and 4-6 mm in diameter. General plan organisation is more or less the same as that of Fasciola. Its anterior end is slightly broader than the posterior end. The [...]
In this article we will discuss about the life history of lung fluke (Paragonimus Westermani). Although the majority of the adult specimens occur in the lungs, their digestive system can cope with a variety of food materials, because they occasionally found in tissues such as brain, liver, spleen, intestinal wall, eye, muscles or even kidneys. P. westermani passes its life [...]