Dictionary > Ascaris lumbricoides

Ascaris lumbricoides

Definition
noun
A parasitic roundworm of humans, generally dwelling in the intestines of human host
Supplement
Ascaris lumbricoides is a parasitic gut-dwelling nematode worm of humans and it poses major medical significance. The species causes human ascariasis. The larva can migrate through the body and cause obstruction, inflammation, and tissue damage. For instance, the larvae may migrate to lungs and cause lung inflammation. This condition may lead to Loeffler’s syndrome, which is a disease wherein the eosinophils accumulate in the lung in response to a parasitic infection. Another possible effect of severe A. lumbricoides infection is intestinal blockage. The large number of roundworms in the intestines results in the entanglement of the roundworms forming a bolus. The bolus, in turn, may block the intestine. This condition may lead to torsion and gangrene of the affected intestine and therefore may necessitate surgical removal of the roundworm bolus.
The species is regarded as the largest roundworm. The males are typically 2 – 4 mm in diameter and 15-31 cm in length. The females are generally 3 – 6 mm in diameter and 20 – 49 cm in length.
Word origin: Greek askarís (“an intestinal worm”)
Scientific classification:

  • Kingdom: Animalia
  • Phylum: Nematoda
  • Class: Secernentea
  • Order: Ascaridida
  • Family: Ascarididae
  • Genus: Ascaris
  • Species: Ascaris lumbricoides (Linnaeus, 1758)

See also:

  • ascarid
  • ascariasis
  • Ascaris suum

You will also like...

Homeostasis by water regulation
Homeostasis of Organism Water Regulation

Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..

Adaptive Radiation
Adaptive Radiation

The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..

An artistic depiction of a human embryo
Growth and Development of a Human Baby

Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

Body temperature regulation by the hypothalamus
Temperature Regulation in Animals

This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..

Birth of a Human Baby
Birth of a Human Baby

Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..

Homeostatic Mechanisms and Cellular Communication
Homeostatic Mechanisms and Cellular Communication

Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..

Related Articles...

No related articles found

See all Related Topics