Microbio - CHAPTER 21 REVIEW PDF
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Uploaded by RationalPathos7049
Blinn College
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Summary
This document reviews intracellular bacteria, including diseases like rocky mountain spotted fever, epidemic typhus, and murine typhus. It also discusses their transmission and vectors. The document further covers topics like Lyme disease, with descriptions of its characteristics and causative agents.
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Chapter 21 – Intracellular Bacteria 1. What diseases did we discuss caused by Rickettsia? (3-16) a. R. rickettsii: rocky mountain spotted fever b. R. prowazekii: epidemic typhus c. R. typhi: murine typhus 2. How is each contracted? What is the vector? (3-16) a. R. rickettsii:...
Chapter 21 – Intracellular Bacteria 1. What diseases did we discuss caused by Rickettsia? (3-16) a. R. rickettsii: rocky mountain spotted fever b. R. prowazekii: epidemic typhus c. R. typhi: murine typhus 2. How is each contracted? What is the vector? (3-16) a. R. rickettsii: spread by wood tickets and dog ticks with transovarian passage b. R. prowazekii: human body louse transmits bacteria to humans through its feces c. R. typhi: rat flea and cat flea 3. What regions of the country are most affected by RMSF? (7) a. Montana, Iowa, Missouri, Tennessee, North Carolina, Virginia 4. What disease is transmitted by the body louse? (12) a. Rickettsia prowazekii – epidemic typhus b. Pediculus humanis 5. What cells of the body does Ehrlichia reproduce in and inhabit? (14) a. Leukocytes (WBCs) 6. Which of these diseases are a problem in Texas? (3-16) a. RMSF, Ehrlichiosis, and anaplasmosis 7. STD that is also a leading cause of blindness and sterility (20-28) a. Chlamydia trachomatis 8. Causative organism of syphilis (31-32) a. Treponema pallidum pallidum 9. Characteristics, cause, vector, organism, incidence for Lyme disease (42-47) a. Borrelia burgdorferi is the causative agent i. Lacks iron-containing enzymes and proteins and uses manganese to avoid the lack of iron in body b. Bacteria are transmitted to humans via a tick bite i. Hard ticks of the genus lxodes are the vectors c. Three phases of disease – i. Expanding red “bull’s-eye” rash occurs at infection site ii. Neurological symptoms and cardiac dysfunction (meningitis, encephalitis, etc) iii. Severe arthritis that can last for years (result of the body’s immune response) d. Increase of cases in the U.S. (humans in closer association with Borrelia- infected deer ticks)
