study of parasites
- lives at the expense of its host
- gains nourishment from its host
- lives in/on another organism
infection of a host other than the normal host species. A parasite may or may not continue full development in this host.
The association of two different species of organism exhibiting metabolic dependence by their relationship
one organism benefits while the other is unaffected
both organisms benefit
one organism benefits at the expense of the other
- Lives on the outside of the host
- ex. Lice and mites
- Lives within the body of the host
- anemia, iron-deficiency
- can live independently of host
- "free-living" stage
- becomes parasitiv if ingested or enters wound
unable to survive outside host
Artifact mistaken for parasite (pollen, hair, junk)
- horrors the adult and/or sexual stage
- AKA final host
harbors larval or asexual stage of parasite
- Living carrier that transmits parasite
- Continuous source of infection
- animal or area that harbors the infective parasite
- infected individual showing no signs of clinical manifestation
- potential source of infection to others
What are modes of transmission for parasites?
Common symptoms of parasitic infections
- Abdominal pain and cramping
- Bowel obstruction
- Enlarged organs
- Skin lesions
What is the class for pseudopods?
What is the class for flagellates?
What class are the parasites that move by cilia in?
What class are roundworms?
What class are tapeworms?
Trematodes and flukes belong to what class of parasites?
Liquid stool should be examined within ________
Semi-solid stool should be examined within _________
Formed stool should be examined within ________
Formed stool may be refrigerated for up to 72 hours
False- 48 hours
This stage of a parasite is capable of invading the definitive host.