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Parasitology > Nematodes- ascaroidia > Flashcards

Nematodes- ascaroidia Flashcards

1
Q

What is the life cycle of t. canis

A

eggs in feces > egg with L2 larvae is the infective to new DH > transmission to DH

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2
Q

What is the infective stage of t. canis

A

egg with L2 larve

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3
Q

Direct transmission of dogs

A

penetrates intestine
goes to liver, heart, pulminary, lungs
molts to L3 coughed and swallowed
goes to stomach

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4
Q

Direct transmission of dogs > 3 months Toxocara canis

A

penetrates intestine

no maturation occurs

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5
Q

Prenatal transmission of toxocara canis

A

Hypobiotic L2 larvae

go to liver and molt to L3, in lungs

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6
Q

Colostra transmission o f toxocara canis

A

Hypobiotic L2 larve in mammary tissues
L2 in colostrum
No migration

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7
Q

Paratenic host of toxocara canis

A

Ingest paratenic host with encysted L2s

no migration

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8
Q

what is the zoonosis for toxocara

A

Visceral larval migrans
lesions
migrate through skin

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9
Q

What is a defining feature of ascarids

A

have an alae

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Parasitology (21 decks)

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