Domanda del libro di testo
Of the parasitic helminths discussed in this chapter, the only one transmitted by mosquitoes is _____________ .
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Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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TOC.tableOfContents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Non è quello che usi tu?Cambia libro di testo
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Bauman 6th EditionCh. 23 - Parasitic Protozoa, Helminths, and Arthropod VectorsProblema 7
Bauman 6th EditionCh. 23 - Parasitic Protozoa, Helminths, and Arthropod VectorsProblema 7Capitolo 23, Problema 7
The following helminths can directly penetrate the skin of humans to establish infection:, ____________ , _____________ , and ________________ (give genera only).
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Understand that the question asks for the genera of helminths that can directly penetrate human skin to cause infection. This means these parasites do not require ingestion but enter through the skin.
Recall that among helminths, certain nematodes (roundworms) are known for skin penetration. Focus on common genera known for this mode of infection.
Identify the first genus: Ancylostoma, which includes hookworms that penetrate the skin, often through bare feet.
Identify the second genus: Necator, another genus of hookworms that also infect humans by skin penetration.
Identify the third genus: Schistosoma, a trematode (blood fluke) genus whose larvae (cercariae) penetrate the skin when humans contact contaminated freshwater.
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Helminth Life Cycle and Infection Routes
Helminths are parasitic worms with complex life cycles involving various hosts and transmission methods. Understanding how certain helminths infect humans, especially through skin penetration, is crucial to identifying which genera can directly invade the host without ingestion.
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Plant VirusesPlant Virus Infection Cycle
Skin Penetration Mechanism
Some helminths have specialized larvae capable of penetrating intact human skin, often through contact with contaminated soil or water. This mechanism allows them to bypass the digestive tract and establish infection directly, a key factor in their transmission and pathogenicity.
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04:08Physical Barriers in First-Line Defenses: Skin
Common Genera of Skin-Penetrating Helminths
The main helminth genera known for direct skin penetration include Ancylostoma, Necator, and Schistosoma. Recognizing these genera helps in diagnosing infections and understanding epidemiology, as they are responsible for diseases like hookworm infection and schistosomiasis.
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04:08Physical Barriers in First-Line Defenses: Skin
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A trematode that can be acquired by eating raw or undercooked vegetables is _____________ .
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