Unit 5 Protistans

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tasha081
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44785
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Unit 5 Protistans
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2010-10-25 12:17:34
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Protistans
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Unit 5 - Exam 2
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  1. Algae
    • photosynthetic protozoans
    • mostly free living aquatic
    • most unicellular
  2. Protistans represent:

    A) bacterial
    B) plants
    C) worms
    D) all life that is not plants, fungi, animals
  3. D
  4. The two major types of Protistans are:
    • Algae
    • Protozoans (non photosynthetic)
  5. Protozoa
    • single celled
    • non photosynthetic
    • no cell walls
  6. Sarcodina
    • Amoeba
    • Reproduce by binary fission
    • Engulf food
  7. Ciliaphora
    • Ciliates
    • Most found in pond water
  8. How many nuclei do Ciliates have?
    • Two Nuclei:
    • 1) Macronucleus "active"
    • 2) Micronucleus "silent"; exchanged during secual cycle
  9. Whas is the only parasitic ciliate?
    • Balantinidium colii - largest protozoan in the gut
    • Causes diarrhea
  10. Mastigophora
    • Flagellates
    • Many are human pathogens
    • Ex: Giardia lamblia
  11. Sporozoa
    • Non-motile
    • All are obligate parasides
    • Ex: Plasmodium
  12. Helminths
    Worms
  13. Norweigan scabies
    Disease in immune compromised patients
  14. Entamoeba histolytica
    • Causative agent: contaminated water/food
    • Class/type: Protozoan - Amoeba - lumen dwelling
    • Route of transmission: fecal-oral
    • Disease sx: ulcers leading to diarrhea, bloody diarrhea, can progress to liver, brain, lungs
  15. Giardia lamblia
    • Causative agent: untreated drinking water
    • Class/type: Protozoan flagellate - lumen dwelling
    • Route of transmission: fecal-oral; some person to person
    • Disease sx: diarrhea, abdominal pain, flatulence
  16. Balantidium coli
    • Causative agent: infected farm animals
    • Class/type: giant ciliate; protozoan - lumen dwelling
    • Route of transmission: fecal-oral; pigs, farm workers
    • Disease sx: more often in immune compromised, intermittent diarrhea w/ constipation
  17. Cryptosporidium
    • Causative agent: contaminated water
    • Class/type: protozoan, sporozoa - lumen dwelling
    • Route of transmission: fecal-oral
    • Disease sx: self limiting, diarrhea. Immune compromised - prolonged servere d* w/ invasion of gall, bladder, lungs
  18. Malaria (plasmodium)
    • Causative agent: plasmodium
    • Class/type: protozoan, sporozoan - blood and tissue
    • Route of transmission: mosquito
    • Disease sx: relapsing fever (fever 48-72 hours); chills, fatigue due to lysis of cells
  19. Toxoplasma gondii
    • Causative agent: contaminated food, water, soil; contaminated kitty litter
    • Class/type: protozoan, sporoozan - blood and tissue
    • Route of transmission: invades via white blood cells - fecal-oral
    • Disease sx: immune compromised patients = brain lesions, disruptions of heart and lungs; pregnant women 33% chance of transmission to fetus
  20. Leishmania
    • Causative agent: sand fly
    • Class/type: protzoan, flagellte - blood/tissue
    • Route of transmission: sand fly
    • Disease sx: cutaneous infections, scarring
  21. Trypanosomas brucei "African sleeping sickness"
    • Causative agent: tse tse fly
    • Class/type: protozoan, flagellate; blood/tissue
    • Route of transmission: tse tse fly
    • Disease sx: fever, lethargy
  22. Trypanosomas cruzi "Chagas disease"
    • Causative agent: kssing bug
    • Class/type: protozoan, flagellate: blood/tissue
    • Route of transmission: kissing bug
    • Disease sx: infection of heart, colon, esophagus
  23. Trichomonas vaginalis
    • Causative agent: trophozoite
    • Class/type: protozoan flagellate; blood/tissue
    • Route of transmission: sexual contact
    • Disease sx: vaginitis, foul smelling discharge
  24. Taenia Saginata (helminth)
    • Causative agent: contaminated beef
    • Route of transmission: oral
    • Disease sx: epigastric fullness, malnutrition d*
    • Animal host: cattle
    • Flatworm/Roundworm: flat worm
  25. Taenia solium (helminth)
    • Causative agent: contaminated pork
    • Route of transmission: oral
    • Disease sx: d* and malnutrition
    • Animal host: pig
    • Flatworm/Roundworm: flatworm
  26. Enterobius vernicularis "Pinworm"
    • Causative agent: eggs are ingested
    • Route of transmission: fecal oral
    • Disease sx: itching, insomnia, d*
    • Animal host: n/a
    • Flatworm/Roundworm: roundworm
  27. Anoylostoma duodenale
    Nectar americanus (latin america)
    (hookworm)
    • Causative agent: contaminated soil
    • Route of transmission: contact w/ moist soil, grass
    • Disease sx: nausea, abdominal pain, anemia
    • Animal host: n/a
    • Flatworm/Roundworm: roundworm
  28. Ascaris lumbricoides
    • Causative agent: contaminated soil
    • Route of transmission: fecal oral, esp soil
    • Disease sx: pneumonia-like, allergy, abdominal pain, malnutrition
    • Animal host: n/a
    • Flatworm/Roundworm: roundworm
  29. Trichinella spiralis
    • Causative agent: undercooked, raw meat
    • Route of transmission: oral
    • Disease sx: muscle, joint pain; Severe = sob
    • Animal host: pig
    • Flatworm/Roundworm: roundworms
  30. Schistosoma
    • Causative agent: contaminated water
    • Route of transmission: penetrates skin
    • Disease sx: rash, liver damage, fever
    • Animal host: snail
    • Flatworm/Roundworm: roundworm
  31. How do you dx a pinworm infection?
    • check for female worms
    • scotch tape on slide to look for eggs
  32. How is transmission of hookworm prevented?
    • By wearing shoes
    • Non dirt floors
  33. Why don't eggs from tapeworms cause a person to develope tapeworm?
    Because the eggs cannot hatch in the human
  34. Pubic Lice
    • causative agent (common name): crabs
    • route of transmission: sexual contact
    • disease sx: itching, rash
    • animal host: n/a
    • vector associated diseases: none known
  35. Pediculus humanus captius
    • causative agent (common name): head lice
    • route of transmission: contact, clothing, combs
    • disease sx: itching
    • animal host: n/a
    • vector associated diseases: edemic typhus, relapsing fever, trench fever
  36. Pediculus humanus corporis
    • causative agent (common name): body lice
    • route of transmission: contact, bedding, clothing
    • disease sx: itching, papules
    • animal host: n/a
    • vector associated diseases: endemic typhus, relapse fever, trench fever
  37. Sarcoptes scabiei
    • causative agent (common name): scabies
    • route of transmission: sexual contact, contact, clothing
    • disease sx: intense itching
    • animal host: n/a
    • vector associated diseases: none known
  38. Fleas
    • causative agent (common name):
    • route of transmission: environment
    • disease sx: itching
    • animal host: humans, dogs, cats, squirrels, rats
    • vector associated diseases: bubonic plague, edemic typhus, cat scratch disease
  39. Ticks
    • causative agent (common name): ticks
    • route of transmission: environment
    • disease sx: itching
    • animal host: mammals, birds
    • vector associated diseases: lyme disease, relapse fever, typhus fever, rickettsial pox, rocky mountain spotted fever, Q fever
  40. What is the genetic cause of sickle cell disease?
    mutation in the heamoglobin gene of red blood cells
  41. How of sx of heterzygote sickle cell different from homozygote?
    If heretozygotic then usually asymptomatic and more resistant to malaria. If homozygotic then anemic, warped red blood cells, clogged capillaries

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