NAME 4 NEMATODES

 AND SPELL THEM

Ascaris lumbricoides

Necator americanus

Enterobius vermicularis

Trichinella spiralis

Ascaris lumbricoides

• how is it contracted
• what are the symptoms
• what happens once in the body

• contracted when consuming the eggs in food or soil 
• symptoms are based upon the tissue that is infected
• the juvenile worms penetrate the intestinal wall and migrate to the lungs and other tissues

Enterobius vermicularis

• what type of worm is it
• how is it contracted
• most common in...

• pinworm
• fecal to oral contamination when
• adult females emerge from teh anus and lay eggs on the perianal region
• most common in children

Necator americanus

• what kind or worm is it
• how is it contracted and expelled

• hookworm
• the juvenile worms penetrate the skin and migrate to the lungs and small intestines
• expelled through feces

Trichinella spiralis

• what does it cause?
• how is it contracted?

• causes trichinosis
• contracted when ingesting eggs on raw pork

what are 3 main groups of helminths?

spell them correctly

• Nematodes
• Cestodes
• Trematodes

• egg
• larvae
• adult

What are trematodes?

what is their body shape?

• flukes
• ovoid body shape
• one side has "shoulders"

NAME 2 TREMATODES

SPELL THEM CORRECTLY

• Schistosoma mansoni
• Clonorchis sinensis

• causes Schistosomiasis
• abd. pain
• diarrhea
• contracted from mammal to human

• oriental liver fluke
• causes liver diease
• contracted snail -> fish -> human[image]

• tapeworms
• flattened sacs for body

name 3 types of cestodes

spell them correctly

• Taenia saginata
• Taenia solium
• Taenia pisiformis

Taenia Saginata

• what kind of worm is it
• how is it contracted
• symptoms

• beef tapeworm
• contracted when ingesting undercooked beef with juvenile worms
• causes diarrhea and abd pain

• pork tapeworm
• contracted when ingesting undercooked porm with worm eggs
• symptoms based upon the tissue that is infected

Taenia pisiformis

what type of worm is it?

• dog tapeworm

• roundworms

Enterobius vermicularis