Definition:
study of parasites
Parasitology
Definition:
- lives at the expense of its host
- gains nourishment from its host
- lives in/on another organism
Parasite
Definition:
infection of a host other than the normal host species. A parasite may or may not continue full development in this host.
Accidental host
Definition:
The association of two different species of organism exhibiting metabolic dependence by their relationship
Symbiosis
Definition:
one organism benefits while the other is unaffected
Commensalism
Definition:
both organisms benefit
Mutualism
Definition:
one organism benefits at the expense of the other
Parasitism
Definition:
- Lives on the outside of the host
- Skin/hair
- infestation
- ex. Lice and mites
Ectoparasite
Definition:
- Lives within the body of the host
- Infection
- anemia, iron-deficiency
Endoparasite
Defintion:
- can live independently of host
- "free-living" stage
- becomes parasitiv if ingested or enters wound
Facultative parasite
Definition:
unable to survive outside host
Obligate parasite
Definition:
Artifact mistaken for parasite (pollen, hair, junk)
Pseudoparasite
Definition:
- horrors the adult and/or sexual stage
- AKA final host
Definitive host
Definition:
harbors larval or asexual stage of parasite
Intermediate host
Definition:
- Living carrier that transmits parasite
- arthropods
Vector
Definition:
- Continuous source of infection
- animal or area that harbors the infective parasite
Reservoir
Definition:
- infected individual showing no signs of clinical manifestation
- potential source of infection to others
Carrier
What are modes of transmission for parasites?
- Food
- Water
- Soil
- Vectors
Common symptoms of parasitic infections
- Diarrhea
- Fever
- Chills
- Abdominal pain and cramping
- Anemia
- Bowel obstruction
- Enlarged organs
- Skin lesions
- Flatulence
What is the class for pseudopods?
Lobosea
What is the class for flagellates?
Zoomastigophorea
What class are the parasites that move by cilia in?
Kinetofragminophorea
What class are roundworms?
Nematoda
What class are tapeworms?
Cestoda
Trematodes and flukes belong to what class of parasites?
Digenea
Liquid stool should be examined within ________
30 Minutes
Semi-solid stool should be examined within _________
1 Hour
Formed stool should be examined within ________
24 hours
True/False:
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.
Infective stage
