NEMATODA Flashcards
(80 cards)
Majority of nematodes are free-living, they can survive in their own
True
Most prevalent area where you can see nematodes
Soil
Nematodes are tapered where
Both ends (complete GI tract)
Nematodes are sexually ___
Dimorphic
Nematodes have cuticles, while flatworms do not
True
Cuticles undergoes molding as nematodes develop from adult to larva
False; larva to adult
3 most common nematodes in Tissue and Blood
Trichuris trichuria, Wuchereria bancrofti. Brugia malayi
Most common intestinal roundworm infecting man and the largest nematode
Ascaris Lumbricoides
Common name of Ascaris Lumbricoides
Giant Roundworm
Ascaris Lumbricoides has intermediate host
False; definitive (ONLY HUMANS)
Ascaris Lumbricoides; jejenum, ileum
>
Plays a huge role in prevention of Ascaris Lumbricoides
Sanitation
Human Feces as Fertilizer
Ascaris Lumbricoides
Cuticle with fine circular striations
Ascaris Lumbricoides
Size of Ascaris Lumbricoides: Males, Females
Males < Females
Matching type: Male or Female
Incurved Tail
Pointed Tail (Tapered)
Incurved Tail - Male
Pointed Tail (Tapered) - female
Fertilized - Inseminated
True
all nematodes are parasitic
true
for nematodes, man is the only host
true
cuticle of ascaris lumbricoides
fine circular striations
diagnostic stage of ascaris
ova
3 layers of ascaris fertilized eggs
inner non-permeable lipoidal vitelline membrane
middle transparent thick glycogen membrane outer coarsely mammillated albuminoid membrane
fertilized egg without the mammillated coat
decorticated fertilized egg
in fertilized egg, how many cells
single