Exam II Flashcards
What 3 characteristics do members of the Plasmodiidae have in common, relative to their sporozoite, type of life cycle, and location of each phase of the cycle?
- sporozoites are the infective stage that’s found in the mosquito
Of the 4 species of Plasmodium that infect humans, which shows the greatest prevalence?
Of the 4 species of Plasmodium that infect humans, which shows the lowest prevalence?
What is the prevalence of malaria?
what is the incidence of malaria?
what is the annual mortality of malaria?
what is the malaria vector?
How does the malaria vector introduce the parasite into the body?
Once sporozoites enter the bloodstream (in malaria), which cells do they infect first?
Once sporozoites enter the bloodstream (in malaria), by what indirect process do they arrive at their final destination cell?
What stage of the vertebrate life cycle is this called in malaria?
In what form do merozoites enter the bloodstream in malaria?
Of the 4 human-infecting species, which produces the most merozoites in the shortest period of time?
Define hypnozoite.
In which species of malaria does hypnozoite occur?
What is the clinical significance of a hypnozoite?
What is the definition of relapse?
What are the events during invasion of a red blood cell by a merozoite (in malaria)?
what is meant by a moving junction (in malaria)?
What stage of the vertebrate life cycle does the moving junction begin?
Can merozoites re-infect liver cells?
Are all stages of red blood cells equally susceptible to invasion by all species?
Which species prefers which RBC stage?
How does the preference of RBC cells explain the observed levels of parasitemia that develop in the different species?