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Micro Protozoa

Dr. O Test 3 Chapter 12

Eukaryotic Cells True nucleus, 80S ribosomes, variety of asex. and sex. reproduction, more complex structures, can be uni- or multicellular
Protozoa Strictly unicellular, no cell wal, uses cilia, flagella, and/or pseudopodia
Distribution of Protozoa Require moist environments, live in bodies of water, moist soil, beaches, and decaying matter
Morphology of Protozoa Diverse, have micro and macronucleus, some have vacuoles, others produce cysts
Nutrition of Protozoa Chemoheterotrophic
Leishmania species Causes Leishmaniasis (cutaneous, mucocutaneous, and visceral) vector=sandfly (phlebotomus) visceral is most deadly -> causes Kala-Azar (Mastigophora-flagellated)
Giardia species (Giardia Lamblia) Causes chronic diarrhea with fatty stool and abdominal pain, contracted by drinking contaminated mountain streams, resistant to chlorine (Mastigophora-flagellated)
Trichomonas vaginalis Causes malodorous frothy, yellow-green discharge, men are asympomatic carriers, treated by metronidazole (leaves metallic taste in mouth) (Mastigophora-flagellated)
Trypanosoma brucei (African Sleeping Sickness) causes coma via meningoencephalitis, vector=tsetse fly (Hemoflagellates-found in blood and lymph)
Trypanosoma cruzi (Chagas disease or American Trypanosomiasis) causes fatal damage to heart, vector=Reduviidae or Kissing Bug, sucks blood from lips, eyelids, or ears (Hemoflagellates-found in blood and lymph)
Entamoeba histolytica Causes amoebic dysentery via ingesting cysts (Sarcodina-pseudopod amoeboid)
Naegleria fowleri Causes primary amebic meningoencephalitis via swimming in infected water or inhaling cysts
Plasmodium species causes... Malaria (non-motile apicomplexa)
Plasmodium falciparum Causes malignant tertian malaria = fever every other day or 36-48 hours and black urine
Plasmodium vivax Causes benign tertian malaria = fever every other day (48 hours)
Plasmodium ovale Causes ovale tertian = fever every other day (48 hours)
Plasmodium malariae Causes quartan = fever every third day (72 hours)
Toxoplama gondii Causes hepatitis, pneumonia, blindness, and severe neuro disorders, can cross placenta to cause spontaneous abortion, still birth, and/or mental retardation, host=cats (Apicomplexa-non-motile)
Cryptosporidium parvum Causes profuse watery diarrhea, hosts=domestic animals (Apicomplexa-non-motile)
Balantidium coli Causes ulcers in large intestine, host=pigs, (Ciliophora)
Microspora Obligate intracellular pathogen, causes chronic diarrhea in immunocompromised ppl
Created by: reeseochoa