clinical parasitology - nematodes Flashcards
a class of helminths also known as roundworms
nematodes
what do you call the parasite in which humans acquire the infection by ingestion of infected copepods or water fleas
dracunculus medinensis
it causes guinea worm infection
dracunculus medinensis
it causes trichinosis with symptoms include diarrhea, blurred vision, muscle edema (mostly striated muscles) and coughing
trichinella spiralis
what do you call the parasite in which humans acquire the infection by eating contaminated undercooked pork
trichinella spiralis
this parasite is found worldwide and pigs are its important reservoirs
trichinella spiralis
T/F
Necator americanus and Ancylostoma duodenale are both hookworms
T
T/F
Ancylostoma duodenale is the ‘new world hookworm’
F
T/F
Necator americanus is the ‘old world hookworm’
F
these parasites causes hookworm infections. depending on the infected body sites, symptoms can include coughing and headaches
Necator americanus and Ancylostoma duodenale
T/F
Necator americanus contains a pair of cutting plates whereas Ancylostoma duodenale has teeth
T
T/F
diagnosis of hookworm infection include:
1. identification of larvae in sputum
2. identification of ova from stool specimens
T
it causes threadworm infection
strongyloides stercoralis
what is the MOT of hookworms?
skin penetration
what is the MOT of threadworms?
skin penetration
it is also known as the giant intestinal round worm
Ascaris lumbricoides
it causes ascariasis resulting in the intestinal tissue destruction and bowel destruction that can be fatal
Ascaris lumbricoides
what is the MOT of the giant intestinal roundworm?
ingestion
T/F
Ascaris lumbricoides can migrate to the lungs
T
T/F
diagnosis of Ascaris lumbricoides involves examination of EGGS and ADULT FORMS in the stool specimen
T
it is also known as the whipworm which causes colitis and dysentery in children and abdominal pain and BLOODY diarrhea in adults
trichuris trichiura
T/F
diagnosis of trichuris trichiura is through detection of EGGS in stool samples
T
also known as pinworm
enterobius vermicularis
it causes enterobiasis that are usually self-limiting and characterized by itching and inflammation of the anus
enterobius vermicularis
T/F
tape preparation is the preferred method of specimen collection in a patient suspected with enterobiasis
T
Nematodes are placed into two groups. These are ___ and ___ .
intestinal nematodes and intestinal-tissue nematodes
what are intestinal nematodes?
- enterobius vermicularis
- trichuris trichiura
- ascaris lumbricoides
- strongyloides stercoralis
- necator americanus
- ancylostoma duodenale
what are intestinal-tissue nematodes?
- trichinella spiralis
- dracunculus medinensis
what are the parasites labeled as the unholy trinity (give the parasitic names) ?
- trichuris trichiura
- ascaris lumbricoides
- necator americanus and ancylostoma duodenale
what are the parasites labeled as the unholy trinity (give the common names) ?
- giant intestinal roundworm
- whipworm
- hookworm
