Lp2 Flashcards
white worms
no segmented
sexes are separate
nematodes
whipworm
medium size
posterior end fatter than anterior
who has curly tail?
Trichuris trichuria
males
eggs have polar plugs at both ends
in fecal smear
more pointed and larger
who’s eggs?
Trichuris trichuria
Eggs have polar plugs but difficult to see
in liver
Capillaria hepetica
adults small white worms
males have small papilla
Trichinella sprialis
no egg stage
larva encyst in muscle tissue
trichinella spirals
Free living nematode
can be parasitic if in a wound
Strongyloides sp
Hookworms
males have teeth
has smooth plates
where are eggs found?
Nector americanus
thin walls
Buccal cavity has two teeth on top
Ancyclostoma duodenale
Most common in dogs
three teeth
Ancylostoma caninum
Pinworm
small worm
who’s Posterior end is very pointed? end curled?
both have flaps on both sides of head
Enterobius vermicularis
males curled
females pointed
Eggs are diagnostic
oval with one side flatter
very thin, light shell
Enterobius vermicularis
HUGE white worm 45cm and 18inches curly posterior? which eggs are round? oval?
Ascaris sp
males
thick walls/bumpy
fertilized eggs round
unfertilized eggs oval
Almost as big as Ascaris sp Adults have large alae on sides of head looks like flaps brown or red how are eggs?
Toxocara sp
nearly perfectly round
shell tick, with small dimples
long worm with black dots
found in blood
elephantiasis
what is the larval form called?
Wucheria bancrofti
microfilaria
