Lecture 5: Parasitology Flashcards
Parasite
a smaller organism that lives on or in and at the expense of a larger organism called the host
Three main classes of parasites that cause disease in humans
helminthes
ectoparasites
protozoa
Host-specific parasite
parasites that develop completely in only one species
Three types of larval migrans
visceral
ocular
cutaneous
What to think about when considering diagnostic methods
SIS
- Host species
- Site of infection
- Size of parasite
When treating parasites, one of the most important aspects in
to treat the environment and manage the source
Roundworm classification
Nemathelminthes
Nematoda
Two types of flatworms
tapeworms
flukes
Tapeworm classification
Platyhelminthes
Cestoda
Fluke classification
Platyhelminthes
Trematoda
Two parts of arthropoda
insect
arachnida
Nematodas (roundworms) can be parasitic or
free living
Physical characteristics of roundworm
elongate/cylindrical
alimentary canal present
Sexes usually seperate
Physical characteristics of tapeworms
flat body
no alimentary canal
Stobilia (body) with hermaphroditic proglottids (segments)
Tremotode physical characteristics
- dorso-ventrally flattened
- Leaf like
- Oral and ventral suckers
- Usually genitally independent
