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PARASITOLOGY > PORTALS OF ENTRY, EXIT, AND MOT > Flashcards

PORTALS OF ENTRY, EXIT, AND MOT Flashcards

1
Q

different portals of entry

A
  • mouth/oral cavity
  • skin
  • urogenital tract
  • nasal passages
  • transplacental
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2
Q

different modes of transmission

A
  • ingestion
  • oral-anal intercourse
  • larval skin penetration
  • skin inoculation (vector-borne)
  • sexual intercourse (venereal)
  • intranasal
  • vertical transmission (mother to fetus)
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3
Q

portal of entry and mode of transmission of most intestinal parasites

A

mouth/oral cavity; ingestion

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4
Q

portal of entry: mouth/oral cavity
mode of transmission: oral-anal intercourse

A
  1. Giardia lamblia
  2. Entamoeba histolytica
  3. C. parvum
  4. E. fragilis
  5. E. vermicularis
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5
Q

causative agent of gay-bowel syndrome

A

Giardia lamblia/Giardia duodenalis

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6
Q

portal of entry: skin
mode of transmission: LARVAL skin penetration

A
  • Hookworms, S. stercoralis (filariform larva)
  • Schistosoma spp. cercaria
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7
Q

portal of entry: skin
mode of transmission: skin inoculation (vector-borne by arthropods)

A

Plasmodium spp., Filariae, Leishmania spp., Treponema spp., Babesia spp.

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8
Q

usual vector of Leishmania spp.

A

Sandfly

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9
Q

portal of entry: urogenital tract
mode of transmission: sexual intercourse (venereal)

A

Trichomonas vaginalis

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10
Q

portal of entry: nasal passages
mode of transmission: intranasal

A

free living acanthamoebas (Acanthamoeba spp. and Naegleria fowleri)

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11
Q

portal of entry: transplacental
mode of transmission: vertical transmission (mother to fetus)

A
  • Toxoplasma gondii
  • Trypanosoma cruzii
  • Plasmodium spp.
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12
Q

causative agent of toxoplasmosis

A

Toxoplasma gondii

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13
Q

causative agent of chagas disease

A

Trypanosoma cruzi

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14
Q

causative agent of malaria

A

Plasmodium spp.

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15
Q

autoinfection within the intestine

A

internal

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16
Q

hand to mouth autoinfection

A

external

17
Q

examples of internal autoinfection

A
  • Strongyloides stercoralis (rhabditiform larva -> filariform larva)
  • atypical eggs of C. philippinensis
  • C. parvum oocyst
  • T. solium (reverse persitalsis of eggs)
18
Q

mode of action of filariform larva

A

bubutasin ‘yung intestinal wall para makapasok sa blood stream

19
Q

example of external autoinfection

A
  • E. vermicularis
  • H. nana
20
Q

PORTALS OF EXIT

A
  • anus
  • mouth
  • urogenital tract
  • non intact skin
21
Q

most common portal of exit

A

anus

22
Q

Paragonimus westermani

A
  • Sputum = Spit
  • Stool = Swallow
23
Q

Urogenital Tract

A

T. vaginalis

24
Q

Non intact skin

A

D. medinensis (skin ulcers)

PARASITOLOGY (25 decks)

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