Test 3 Study Guide Flashcards by Jazmin Jupiter

Turbellaria

free-living flatworms

Most of the symbionts of Turbellarians are commensals

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Cestodes (cestoidea)

tapeworms

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Monogenetic trematodes (monogenoidea)

Monogenes are ectoparasites of vertebrates, including fishes.

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Digenetic trematodes

endoparasitic flukes

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Enoplean nematodes

Ancestral group of nematodes.

Consists of Trichuris trichula (human whipworm) which causes trichuriasis and trichinella.

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Chromadorean nematodes

Order Rhabditida

Parasitic nematodes

Consists of ascaris, enterobius (human pinworm), necator, wuchereria, and onchocerca.

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Drug for platyhelminths

praziquantel

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Drugs for nematodes

Mebendazole and albendazole.

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Diphyllobothrium

largest tapeworms

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Taenia sp. (species, disease, infective stage)

T. solium & T. saginata
Causes cysticercosis
Infect: cysticerci

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Echinococcus granulosus (description, disease, infective stage)

Dog tapeworm
Causes hydatid disease
Infect : cysts

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Taenia sp. (symptoms)

Abdominal pain, diarrhea, headache, dizziness, and abdominal obstruction

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Hymenolepis nana (name and intermediate host)

the human dwarf tapeworm
Intermediate host (beetle)

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Schistosoma sp. (species, disease, infective stage, intermediate host)

S. mansoni, S. haematobium, S. japonicum
Schistosomiasis
Infect: cercariae
Intermediate host: snail

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Intestinal schistosomiasis (and where)

S. mansoni (veins of large intestine)

S. japonicum (veins of small intestine)

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Urinary schistosomiasis

S. haematobium

Fasciola hepatica (description, intermediate host, infective stage)

Sheep and cattle parasite
Intermediate host: snail
Infect: metacercariae

Trichinellida (species)

Trichuris trichuris

Trinchinella spiralis

Trichuris trichuris (description, disease, insert, infect)

whip worms
Trichuriasis
Ingestion
Embryonated eggs

Trichuris trichuris (symptoms, diagnosis)

Mucosal hemorrhage
Retardation
Rectum prolapse

Stool samples
Colonoscopy

Trichinella Spiralis (description, disease, insert, infect)

Parasitic roundworms
Trichinosis
Ingestion
Encysted larva

Trichinella Spiralis (host, symptoms)

Human dead-end host

Damaged blood vessels
Necrosis

Strongyloides (species, disease)

S. fuelleborni and S. stercoralis

Strongyloidiasis

S. stercoralis (insert, infect, symptoms, diagnosis)

Penetration or ingestion

Filariform larvae J3
To the lungs

Localized burning sensation/ abdominal pain
Rash

Stool sample
ELISA and PCR

S. fuelleborni (insert, infect, symptoms, diagnosis)

Penetration or ingestion Filariform larvae J3 Localized burning sensation/ abdominal pain Rash Stool sample ELISA and PCR

Hookworms (species, infect, insert, symptom)

A. duodenale & N. americana Infect: filariform larva L3 Penetrate the skin Creeping eruption

Ascaridomorpha (species, infect, insert, diagnosis)

A. lumbrocoides & A. suum Infect: embryonated eggs Ingestion Diagnostic stage is fertilized & unfertilized eggs.

Toxicara (species, disease, infect, host)

T. canis & T. cati Toxicariasis Infect: L3 larva Human accidental host Visceral Larva Migrans (VLM)

Pinworms/Oxyuridomorpha (species, infect, diagnosis)

Enterobius vermicularis Light, blown by wind. Female places eggs on the outside of the anus. Infect: Embryonated eggs Cellophane tape against a wooden applicator on the perianal skin.

Filarial worms (species, disease, infect, diagnosis, vectors)

W. bancrofti, B. malayi and B. timori Lymphatic filariasis: elephantiasis Infect: L3 larva Microfilaria diagnosis Vectors: anopheles, aedes, culex, ochleretatus, and mansonia

Onchocerca volvulus (disease, description, diagnosis, infect, symptoms)

Onchocerciasis River blindness Near fast flowing rivers Diagnosis: skin biopsy Infect: L3 larva, microfilaria Symptoms: onchocercomas

Guinea worm (species, insert, infect, condition)

Dracunculus medinensis Ingestion of infected water Infect: L3 larva Infected person make contact with water. The water must contain the crustacean intermediate host. The water must be used for drinking.