What are the different stages in the life cycle of Ascaris?

The fertilized eggs grow into a larva. The larva then becomes infective after 18 days to several weeks, depending on the environmental conditions like warmth, moist, and soil region. After ingestion, the fertilized eggs hatch and larvae emerge and invade the intestinal mucosa.

What is the function of Ascaris lumbricoides?

An ascarid nematode of the phylum Nematoda, it is the most common parasitic worm in humans. This organism is responsible for the disease ascariasis, a type of helminthiasis and one of the group of neglected tropical diseases.

How is Ascaris lumbricoides diagnosed?

Health care providers can diagnose ascariasis by taking a stool sample and using a microscope to look for the presence of eggs. Some people notice infection when a worm is passed in their stool or is coughed up.

What is the structure of Ascaris lumbricoides?

Adults of Ascaris lumbricoides are large roundworms. Females measure 20–35 cm long with straight taisl; males are smaller at 15–31 cm and tend to have curved tails. Adults of both sexes possess three “lips” at the anterior end of the body.

Where do Ascaris lumbricoides live?

Ascaris parasites live in the intestine. Ascaris eggs are passed in the feces (poop) of infected people. If an infected person defecates outside (for example, near bushes, in a garden, or in a field), or if the feces of an infected person is used as fertilizer, worm eggs are deposited on soil.

What is the classification of Ascaris lumbricoides?

ChromadoreaAscaris lumbricoides / Class

What are the characteristics of Ascaris lumbricoides?

Where are Ascaris lumbricoides found?

How do Ascaris feed?

Adult worms developing in the gut feed on luminal content, they steal liquid nourishment from the host contributing to protein energy malnutrition and impaired carbohydrate absorption.

What is the common name of Ascaris lumbricoides?

Ascaris lumbricoides, also known as roundworm, Ascaris worms, or giant roundworm, is a nematode parasite that can infect humans by residing in the gastrointestinal tract or in other areas of the body such as the lungs.

What is the pathogenesis of Ascaris lumbricoides?

Pathogenesis. The pathogenesis of ascariasis is generally related to organ damage and host reactions to larval migration as well as the number and location of adult worm in the body. Ascaris larvae migrating through the intestinal mucosa, liver and lungs provoke hypersensitivity reaction in the human host.