Parasite
Ascaris lumbricoides
Large intestinal nematode
AS-kuh-ris lum-brih-KOY-deez
High-yield clue
Large roundworm + thick mammillated egg + lung migration vocabulary.
Overview
A large roundworm used to teach nematode egg vocabulary, intestinal obstruction concepts, and lung-migration lifecycle terms.
Classification
- Helminth
- Nematode
- Intestinal roundworm
Lab & identification clues
- Ova/parasite egg vocabulary
- Mammillated egg morphology
- Adult worm term recognition
Associations
- Intestinal obstruction vocabulary
- Eosinophilia concept
- Soil-transmitted helminth framing
Commonly confused with
- Hookworm
- Strongyloides
- Taenia species
Your notes
Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.