P Flashcards

(39 cards)

1
Q

Parasite is a

A

organism that lives on or in another organism at the expense of this host

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2
Q

Three types of parasites

A

protozoa helminths and arthropods

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3
Q

transmission of protozoa that live in the intestine

A

fecal-oral route

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4
Q

protozoa that live in the blood or tissue or humans transmission mode is

A

arthropod vector (malaria)

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5
Q

Malaria symptoms

A

fever,chills flu like symptoms. if untreated severe complications and death

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6
Q

Malaria parasite

A

Plasmodium species, mainly plasmodium falciparum

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7
Q

malaria vector

A

anopheles mosquito

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8
Q

diagnosis of malaria

A

blood films

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9
Q

Malaria life cycle

A

sporozoites injected under skin, travel through blood and enter liver, mature in lier and re-enter circulation as merozoites, invade red cells and lyse cells, sexual forms taken up by mosquitos

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10
Q

Malaria control

A

Insecticide treated nets, prophylaxis, Vaccine reserch

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11
Q

Amoebic Dysentery is a

A

Protozoal infection

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12
Q

Amoebic Dysentry is caused by

A

Entamoeba histolytica

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13
Q

Amoebic dysentery causes

A

diarrhoea with blood or pus. intestinal and extra intestinal infections. liver abscess in late disease

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14
Q

Diagnosis of amoebic dysentry

A

Hot stool sample-pseudopodia, cysts can be seen in the stool with microscope

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15
Q

Amebic liver abscess characteristic

A

reddish brown pus

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16
Q

Protozoa 3 Leishmaniasis infection is caused by

A

sandfly bites

17
Q

Cutaneous Leishmaniasis

A

skin or mucous ulceration

18
Q

visceral leishmaniasis

A

fever, weight loss and hepatic-splenomegaly

19
Q

Leishmaniasis diagnosis

A

histology of biopsy material

20
Q

Three types of helminths

A

Nematodes(round worms) Cestodes (tapeworms) and trematodes (flat worms)

21
Q

Enterobiasis

A

Threadworm, sellotape test, ova seen on microscopy

22
Q

Ascaris lumbricoides is a

23
Q

\ascaris lumbricoides lifecycle

A

ingested eggs hatch in intestine, large carried by the circulation to the lungs, swallowed again and adult worms develop in and inhabit small intestine

24
Q

ascaris lumbricoides symptoms

A

often asymptomatic, transient pulmonary symptoms, mass of worms may obstruct small intestine or bile duct

25
Cestodes, flat worms in pork
taenia solium
26
cestodes flat worms in beef
taenia saginata
27
cestodes lifecycle
larval cysts are ingested in meat(int host) adult tape worm forms in human(def host) ingestion of t.solium eggs causes tissue cysts in humans. ova seen in stool
28
Echinococcus is a
Tapeworm
29
Echinococcus is carried by
dogs, wolves, foxes
30
echinococcus lifecycle
humans ingest eggs, eggs hatch and enter circulation, hydatid cyst forms in liver.
31
lier cyst from what must be removed completely
echinococcus tapeworm
32
Schistosomiasis is caused by
flatworms: haematobium-bladder mansion-intestinal japonica-intestinal
33
schistosomiasis cycle up to human
ova excreted in urine, miracidia released in fresh water, penetrate body of snail, cercaria emerge from snails after 4-6 weeks and penetrate human skin.
34
schistosomiasis cycle in humans
migrate through lungs to liver, mature into worms tat migrate to mesenteric or bladder venues. lay eggs that cause inflation of bladder or intestinal wall.
35
Acute febrile episode is(katayama fever)
in schistosomiasis short period of fever when eggs are laid
36
most severe schistosomiasis
japonicium
37
schistosomiasis haematobium causes
haematuria, bladder cancer
38
Eosinophilia and elevated IgE accompanies
helminth infection
39
Serology is
detection of antibodies- useful in deep tissue infection