Download chrome exte7/28/2023 ![]() ![]() The third moulting take place in alveoli of lungs and 4 th stage larvac are formed.ġ3. Then it goes to heart through post caval veinġ0 It reaches lungs through pulmonary arteries.ġ1 The second moulting take place in alveoli of lungs and 3 rd stage larvae are formed.ġ2. It reaches the liver through heparic portal veinĩ. Here larva undertakes extra intestinal migration.Ĩ. In the small intestine the shell gets dissolved and larva is released. The 2 nd seage larva is the infective stage to man formed by first moulting.Ħ These eggs reach a new host through contaminated food and waterħ. ![]() Life cycle of Nscaris lombricoidesġ After copulation in the small intestine the female releases about rwo lakh eges dailyĢ Each oge is surrounded by a rippled proten coat and hence it is called mammillated cgeģ These mammillated eggs are passed out along with faecal matter.Ĥ In the moist soil, development takes place inside the cggs and first stage rhabdinform larva us produced.ĥ It undergoes first moulting and 2 nd stage rhabditiform larva is formed. ![]()
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