Micro 1

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Author:
gatorali
ID:
29044
Filename:
Micro 1
Updated:
2010-08-05 11:29:41
Tags:
Microbiology
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Description:
Chapter 1 Microbiology Quiz
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  1. Usual first encounter w / microorganisms
    Birth
  2. Common diseases transmitted to fetus through placenta (congenital
    infections)
    Rubella (German measles)

    Syphilis

    • Diseases caused by HIV or
    • CMV
  3. Immunological protection from mother
    Antibodies from her circulation and milk
  4. Exogenously acquired diseases
    Exogenously acquired diseases
  5. Endogenously acquired diseases
    • Caused by agents of normal microbial flora (usually when they penetrate
    • into deeper tissues)
  6. Colonization
    Presence of microorganisms (may or may not lead to damage/disease)
  7. Distinguishing between exogenous and endogenous difficult. Why?
    “Normal flora” varies between individuals, as does response to agents
  8. Ingress vs. Penetration
    • Ingress: entry into body cavities contiguous with outside
    • environment

    • Penetration: entry into
    • deeper tissues after crossing epithelial barrier
  9. Defenses against infection via inhalation
    Anatomic structures (nasal turbinates, oropharynx, larynx)

    • Upward-sweeping ciliary
    • epithelium
  10. Defenses against infection via
    ingestion
    • Stomach acid (varies based on type/amount of food ingested), pancreatic
    • enzymes, bile salts, peristalsis action
  11. Part of S.I. more favorable to bacterial life
    Ileum
  12. Cell-mediated entry
    • Occurs when macrophages containing microorganisms reenter body and carry microorganisms
    • to deeper locations (e.g. HIV)

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