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34 Cards in this Set

  • Front
  • Back

mycosis

truefungal pathogens that exhibit some degree of virulence or withopportunistic pathogens that take advantage of defective host resistance

dimorphism

switch from hyphal cells typical of themycelial or mold phase to yeast cells typical of the parasitic phase

4 true pathogens

Histoplasma, blastomyces, coccidioides, paracoccidioides

true pathogens

never found as normal flora

4 opportunists

Candida albicans, Cryptococcus, Pneumocystis, Aspergillus

Epidermophyton

pathogenic, filamentous fungi


found in warm moist environments


causes ringworm of feet

Tinea

Ringworm


Cutaneous, contagious infection on scalp, body, feet, or nails

Subcutaneous infection

destroys tissue

Systemic fungal infection

spread by spores, usually inhaled in lungs and spread through blood



amastigote

without flagella

promastigote

single flagellum

epimastigote

The flagellatestage, which has a free anterior flagellum and an undulatingmembrane.

trypomastigote

Thelarge, fully formed stage characteristic of Trypanosoma.

trophozoite

active feeding stage found in hosts

cyst

dormant, resistant body

Entamoeba histolytica

causes amebiasis, or severe diarrhea

Naegleria fowleri

Causes meningoencephalitis, trophozoites swim up nose through water

Balantidium coli

only ciliated pathogen. erodes the intestines/Balantidiasis

Trichomonas vaginalis

parasite that causes STD

Acanthamoeba

causes eye infection

Giardia lamblia

causes Giardiasis, or diarrhea. organisms is flagellated and has two nucleuses.

Trypanosoma brucei

causes African Sleeping Sickness. Acquired by bite from Tsetse fly.

Trypanosoma cruzi

Causes Chagas disease. Acquired by bite from the kissing bug

Plasmodium species

Causes malaria, acquired by bite from Female Anopheles mosquito

Toxoplasma gondii

Acquired from handling cat feces, will affect pregnant women's fetuses

helminths

multicellular animals (worms) with specialized mouthparts and adaptations such asreduction of organs, protective cuticles, and complex lifecycles.

definitive host

host that has adult form of parasite

intermediate host

host that has larval (juvenile) form of parasite

Nematode

Roundworm

Trematode

Fluke

Cestode

Tapeworm

Beef tapeworm

Taenia saginata

Pork tapeworm

Taenia solium

Insect vectors of disease

mosquitos, fleas, lice, ticks