PetriKey

Parasite

Trichomonas vaginalis

Motile flagellated protozoan

trik-oh-MOH-nas vaj-ih-NAL-is

parasiteprotozoaflagellatemotilesti

High-yield clue

Motile flagellate + no cyst form is the classic study distinction.

Overview

A flagellated protozoan used to teach motility vocabulary, STI screening concepts, and the absence of a cyst form in common coursework framing.

Classification

  • Protozoan
  • Flagellate
  • Trophozoite-only teaching concept

Lab & identification clues

  • Wet mount motility vocabulary
  • NAAT vocabulary
  • Flagella morphology

Associations

  • STI coursework vocabulary
  • Vaginitis vocabulary
  • Public-health screening framing

Commonly confused with

  • Giardia duodenalis
  • Candida albicans

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.

OpenStax: Microbiology 2e organism classification foundationssourceNCBI Bookshelf: Medical Microbiology organism chapterssourceCDC: CDC disease and public-health topic pagessource