Micro ch 5

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Author:
hjones18
ID:
151756
Filename:
Micro ch 5
Updated:
2012-05-02 18:49:49
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micro
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micro ch 5
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  1. Parasitology
    Branch of micro that studies parasites
  2. Parasitism
    Symbiotic relationship that benefits one party and harms the other
  3. Ectoparasites
    Outside of body
  4. Endoparasites
    Inside body
  5. Definitive Host
    Harbors the ault or sexual stage of parasite
  6. Intermediate Host
    Harbors larval/asexual stage
  7. Accidental Host
    Can serve as a host but not usual host
  8. Facultative Parasite
    Capable of independent life
  9. Obligate parasite
    Must have host (most that infect humans are obligate)
  10. Ways parasites can damage host
    • Often depends on # of parasites
    • Produce toxins
    • Produce harmful enzymes
    • Cause damage to tissues
    • Destroy individual cells
    • Cause occlusion of BV
  11. Most protozoa are ____
    Unicellular (one cell)
  12. Protozoa are classified by mode of _____
    locomotion
  13. Amebae
    Move by pseudopia
  14. Cilliates
    Move by cilia
  15. Flagellates
    Move by whip like flagella
  16. Sporozoa
    No means of locomotion
  17. Protozoal infections are often diagnosed by microsopic exam of
    • body fluids
    • tissue speciments
    • feces-examined for motile trophozites or dormant cyst stages
  18. Study of fungi
    Mycology
  19. Some fungi are harmful some are ____
    beneficial
  20. Fungi are
    • Eukaryotic
    • yeasts, molds, fleshy fungi
  21. Fungi are ____ _____ of nature
    garbage disposers
  22. Not ____
    plants- NOT photosynthetic
  23. Fungal cell walls contain
    Chitin
  24. Some fungi are ____ and some grow as filaments called ____
    • unicellular
    • Hyphae
  25. Hyphae intertwine to for a mass called
    Myecelium
  26. Fungals cells reproduce by
    • Budding
    • Hyphal extentsion
    • Formation of spores
  27. 2 categories of spores
    • Sexual
    • Asexual (conidia)
    • Some use both!
    • Spores are very resistant
  28. Classification of Fungi is based on mode of ____ reproduction
    sexual
  29. Describe Yeasts
    • Eukaryotic
    • Unicellular (no hyphae)
    • Budding
    • Found in soil, water, skins of fruits and veggies
  30. Describe mold
    • Have hyphae
    • Spore formation either sexually or asexually
    • found in water, soil, of food
    • some produce anitbiotics
  31. aerial hyphae
    reproductive hyphae
  32. Describe fleshy fungi
    • Mycelium
    • forms and releases spores
    • mushrooms, toadstools
  33. Infectious diseases caused by molds
    mycoses
  34. Superficial mycoses
    hair, nails, epidermis
  35. Cutaneous mycoses
    living layer of skin/dermis
  36. Subcutaneous and systemic mycoses
    • More severe
    • Sub-dermis and underlying tissues
    • Sys-internal organs
  37. Helminths
    • Parasitic worm
    • Multicellular, eukaryotic
  38. 2 divisions of Helminths
    • Round worms
    • Flatworms-Tapeworms or Flukes
  39. Helminths aquired by
    ingesting larval stage or penetration of skin
  40. Classify helminths according to
    • shape
    • size
    • organs
    • hooks
    • suckers
    • reproduction
    • hosts
    • appearance of eggas and larva
  41. Flatworms
    • Bilateral symmetry
    • Multicellular
    • Animals
    • reproduction=hermaphroditic
    • no resp structure-digestive tract is blind pouch
  42. Cestodes are
    Tapeworms
  43. Trematodes life cycle-sucking moutparts
    • 2 hosts
    • Leaflike worm
    • both asexual and sexual
    • eggs develp into larva in water-invade snails
  44. Cestodes and tapeworms are flat worms that live in hosts ___
    intestines
  45. Scolex and proglottids
    Hooks and segments
  46. Nematodes
    • Roundworms
    • Unsegmented multicellular
    • 2 to reproduce
    • Mitosis
    • Spines and hooks on mouth
    • Digestive tract has 2 ends
    • EX pinworms heartworms hookworms
  47. Diseases that can cause spontaneous abortions, conge. abnormalities, brain damage, prematurity and stillbirths
    • S-syphilis
    • T-toxoplasmosis
    • O-other/hep B, AIDS, chlamydia
    • R-rubella
    • C-cytomegalovirus
    • H-herpes

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