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Definition of «Ascaris»


Ascaris: The intestinal roundworm, a worm that lives in the small intestine.

Infection with ascaris is the most common worm infection in humans. It is termed ascariasis.

Ascaris eggs are found in the soil. Infection occurs when a person accidently ingests (swallows) infective ascaris eggs. Once in the stomach, larvae (immature worms) hatch from the eggs. The larvae are carried through the lungs then to the throat where they are then swallowed. Once swallowed, they reach the intestines and develop into adult worms. Adult female worms can grow over 12 inches (4.8 cm) in length. Adult male worms are smaller. Adult female worms lay eggs that are then passed in feces; this cycle takes between 2 and 3 months. Adult worms can live 1 to 2 years.

For More Information «Ascaris»

  • Ascaris Infection - CDC

    An estimated 807-1,221 million people in the world are infected with Ascaris lumbricoides (sometimes called just "Ascaris"). Ascaris, hookworm, and whipworm ...

  • Ascaris

    Exercise from Invertebrate Anatomy OnLine covering the systematics, external and internal anatomy and life cycle of this worm.

  • What is Ascaris? - wiseGEEK: clear answers for common questions

    Ascaris is a parasitic round worm that can live inside human intestines. Most of the time ascaris enters the body by...

  • ESWStanford - Ascaris

    Background . Life-Cycle; Ascaris lumbricoides is a helminth or more specifically a nematode (roundworm) that undergoes most of its life-cycle within the human body.

  • About Ascaris | eHow.com - eHow | How to Videos, Articles ...

    The Ascaris roundworm is a parasitic intestinal worm. Though most common in pigs, the A. lumbricoides variety makes its home in humans. It has been estimated that 1.2 ...

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