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Nematodes
1.
2. * Nematodes
Are Round Worms With Cylindrical Body And
Complete Digestive Tract
There Are 2 Categories Of Nematodes :
1. Intestinal Nematodes
2. Tissue nematodes
4. 1/Enterobius
E. Vermicularis cause pinworm ifection
LIFE CYCLE:
Confined Human
Ingestion of eggs hatch in small intestine larva adult
Migrate to colon and mating occur
Adult female migrate to perianal skin to release eggs
5. C/F;
Perianal pruritus
Lab . Diagnosis ;
Scotch tape technique and observed micro scopically
Eggs not found in the stools
Treatment;
Mebendazole or Pyrantel pamoate
It kill adult worm not eggs
6. 2/Trichuris;
Cause whipworm infectionTrichuris trichiura
Life cycle;
Ingestion of eggs larvae adult mate at colon
Eggs pass in the feces deposite in warm moist soil form
Embryo when ingested life cycle complete
8. 3/Ascaris;
Ascaris lumbricoides cause Ascariasis
Life cycle;
Ingestion of eggs larva migrate through gut wall
blood stream lung
Alveoli bronchi trachea swallowed.
and in small intestine become adult live In lumen depend on ingested food
eggs pass with fece
10. Trichinella;
Trichinella spiralis cause trichnosis
LIFE CYCLE;
Eating raw or undercooked meat containing larva encysted in muscle
Larva excyst in small intestine , distribute through blood stream
Develop in striated muscle