Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
58 Cards in this Set
- Front
- Back
|
Protozoa (eukaryotic or unicellular)
|
eukaryotic and unicellular
|
|
|
what are pseudopodia
|
extensions of cytoplasm
|
|
|
what are cilia
|
fine, short hairs, covering surface
|
|
|
what is a flagellum
|
contractile fibre act in a whip like manner
|
|
|
what is the glide mechanism
|
unknown mechanism
|
|
|
what does pinocytosis involve?
|
fluid droplets
|
|
|
what does phagocytosis involve?
|
larger particles
|
|
|
what are cytosomes
|
specialised structures for macromolecular uptake
|
|
|
what is sporogony
|
asexual reproduction within the oocyst
|
|
|
what is gametogony
|
sexual reproduction in host
|
|
|
what is schizogony
|
asexual reproduction in host
|
|
|
homoxenous life cycle
|
single host, direct transmission
|
|
|
heteroxenous life cycle
|
more than 1 host, indirect transmission
|
|
|
facultatively heteroxenous
|
may have more than 1 host, but 2nd not essential for life cycle
|
|
|
what do trypanosoma cause?
|
sleeping sickness
|
|
|
what are trypanosoma
|
flagellate protozoa - infect wide range of mammals
|
|
|
why are trypansoma important?
|
greatest cause of disease of cattle in Africa
|
|
|
where do trypanosoma multiply?
|
most multiply in blood and tissues
|
|
|
what causes Malaria
|
Plasmodium spp especially plasmodium falciparum
|
|
|
what does premunition mean?
|
no symptoms
|
|
|
malaria vaccine
|
no vaccine
|
|
|
malaria symptoms
|
violent fever, anaemia and splenomegaly
|
|
|
importance of spleen
|
essential for induction of immune repsonse and clearance of primary infection
|
|
|
spleen
|
site of contact between blood and lymphocytes
|
|
|
what causes coccidiosis
|
eimeria
|
|
|
what do eimeria do
|
villous atrophy
|
|
|
coccidiosis symptom
|
bloody watery faeces
|
|
|
nematodes other name
|
roundworms
|
|
|
nematodes offspring
|
females produce eggs or L1
|
|
|
oviparous
|
egg-laying
|
|
|
egg-laying, hatch quickly
|
ovoviviparous
|
|
|
viviparous
|
produce L1
|
|
|
PPP - pre patent period
|
period between infection and 1st appearance of eggs/larvae
|
|
|
nematodes migration
|
hepato-tracheal migration (gut - liver-heart-lung-gut)
|
|
|
toxocara canis egg
|
thick, pitted, round, brownish
|
|
|
trichuris muris egg
|
plugs on either end
|
|
|
what are trematodes
|
flat, leaf shaped worms
|
|
|
what are monogeneans
|
ectoparasites, direct life cycle, single attachment organ - haptor
|
|
|
what are digeneans
|
endoparasites, complex indirect life cycles, ventral and oral suckers, generally hermaphrodites
|
|
|
other name for trematodes
|
flukes
|
|
|
tapeworms other name
|
cestodes
|
|
|
scolex
|
anterior end of cestode
|
|
|
strobila
|
worm chain of cestode
|
|
|
proglottid
|
segment of cestode
|
|
|
don't have a gut
|
cestodes
|
|
|
if dog is under 3 months
t.canis |
adult nematodes (t.canis) develop in SI
|
|
|
if dog is older than 3 months
t.canis |
larvae (T.canis) arrest in tissues
|
|
|
T.canis transplacental transmission
|
100% infection. migration
|
|
|
T.canis transmammary transmission
|
L3 in milk upto 5 weeks. no migratory phase
|
|
|
T. canis migratory phase symptoms
|
coughing, increased respiratory rate, pneumonia in heavy infections
|
|
|
Enteral phase symptoms
t.canis |
pot-bellied pups, failure to thrive
|
|
|
liver flukes other name
|
fasciola hepatica
|
|
|
fasciola hepatica intermediate
|
intermediate = amphibious brown snail
|
|
|
acute fasciolosis
|
2-6 wks after ingestion
>2000 metacercariae |
|
|
subacute fasciolosis
|
6-10 wks after ingestion
500-1500 metacercariae |
|
|
chronic fasciolosis
|
4-5 mnths after ingestion
200-500 metacercariae |
|
|
what helmith is ostertagia ostertagi?
|
nematode
|
|
|
what causes parasitic gastroenteritis?
|
ostertagia ostertagi
|
