Lab: Parasites Flashcards
Ascaris lumbricoides route of transmission
Fecal oral
Enterobius route of transmission:
hand to mouth
exits anus, lays eggs. secretes fluid that makes people itch
Necator americanus route of transmission:
larvae in soil penetrate foot skin, hatches to larvae in ground
Trichenella spiralis larvae route of transmission:
transferred to humans by eating contaminated uncooked pork, larvae goes to skeletal muscle
Clonorchis sinensis route of transmission:
eating contaminated undercooked fish
ova > 1st host (snail) > larvae > 2nd host (fish)
Schistosoma mansoni route of transmission:
larvae in water penetrating the skin with an enzyme that allows it to
1st host (snail) > larvae > 2. penetrates skin
Taenia saginata route of transmission:
eating contaminated undercooked beef
Has lots of branches on proglottids and suction cup on the scolex
Taenia saginata
Taenia solium route of transmission:
eating contaminated undercooked pork
Has 8-13 branches on proglottid
Has suction cups and hooks on scolex
Taenia solium
disease humans get from ingesting solium egg (ovum), goes straight to brain
Cysticercosis
eggs
Ova
egg
Ovum
Head of tapeworm
Scolex
Segment of tapeworm body
Proglottid
Has both eggs and sperm, can reproduce with self
Dioecious
Platyhelminthes are commonly known as
Flatworms
The animal that harbors the adult worm is called the
definitive host
Class trematoda are also called
flukes
Class cestoda are also called
tapeworms
Non-segmented, leaf-shaped parasites that have a simple digestive tract and require at least one intermediate molluscan host (e.g. snail) in their life cycle
Class Trematoda
Are segmented, ribbon-like flatworms that lack a digestive tract of their own.
Class Cestoda
Has only a suction cup on the scolex
Taenia Saginata
Has suction cups and hooks on the scolex
Taenia Scolium
The proglottids of Taenia Saginata have more than _______ lateral branches on each side
15
The proglottids on Taenia Solium have ______ to ______ branches
8 to 13
Cestoda (tapeworms) are non-segmented
False
Trematodes (flukes) lack a digestive tract of their own
False
Having both male and female reproductive organs
Monoecious