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74 Cards in this Set

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Histozoic parasites
parasites living within tissues
Coelozoic parasites
living in luman of tube/hollow organ; parasite living in a specific part of body
epidemiology
study of disease and disease onset; study of factors affecting transmission/distribution
vector
means of transmission of a disease causing organism from 1 succeptible host to another
infrapopulation
all individuals of a single parasite species in 1 host
suprapopulation
all individuals of a single parasite species in the life cycle in all hosts in an ecosystem
helminth
worm or vermend
enterobius or vermicularis
most common parasite; pinworm in children
parasitic neurosis
telling someone they have a parasite
epizootics
identical to an epidemic but in animals
host
orgamism that harbors another organism
reservoir host
wild animals can tolerate it but domestic animals subcomb to infection
zoonosis
animal parasite moving to humans
symbiosis
relationship of one species to another--in/on
Free-living species
a species lives off another without compromising anyone else

-ofter invades dead host
phoresy or phoresis
relationship where neither organism is physiologically dependent on the other
mutualism
relationship where both species benefit
cleaning symbiosis
mutualistic, one organism helps clean other
commensalism
Relationship where one organism benefits and the other is not affected
Facultative commensalism
organism is physically able to leave the host
obligate commensalism
one organism cannot leave the organism or it will perish
Parasitism
relationship where one organism benefits where the other is harmed
ectoparasites
parasites found on the outside of body
endoparasites
parasites that live internally
Obligate parasitism
parastie spends some of their life cycle within the host; some of the life cycle may be outside the host
Facultative parasitism
not normally a parasite but can be when accidentally ingested or enter body
Accidental/incidental parasites
Parasites that live in a host they normally don't
permanent parasite
spend entire adult life in host
temporary/intermittent parasite
parasites that feed on host and then leave
parasitoid
acts like a parasite, usually insect, but immature stage ends up killing host
definitive host
host where parasite reaches maturity
intermediate host
some development occurs but doesn't reach sexual maturity
Paratenic/Transport Host
host that allows parasite to complete life cycle.

-this increases the parasite's survival
high host specificity
can mature in one species

ex. cestodes, taenia solium
absolute host specificity
can develop in one specific species
low host specificity
can develop in a wide range of species
hyperparasitism
parasites have parasites
reproductive potential
organism must reproduce successfully or extinction will occur
Multiple fission
instead of single mitotic division, several occur before cytoplasmic division
schizogony
cytoplasmic division
hermaphroditism
both female and male
strobilization
occurs in cestodes, each section contains thousands of eggs and they're disperses when section is shed
hexagonoporus
in whales and times for birthing season, 45,000 proglottids
Matacestodes
budding, many scolices (head) in a fluid-filled bladder. Each is capable of becoming another worm, usually intermediate host

ex. dog is definate host for taenia pisiforms (bladderworms) It will release eggs and proglottids in dog (shits). Eggs are in grass--> intermediate host=rabbits--> dog eats rabbit
histozoic parasites
parasites that live in the tissues
coelozoic parasites
parasites that live in the tuman of tube or hollow organ

-different environments provide different things for parasites
epidemiology
the study of dieseases and the onset; study of transmission and distribution of diseases
vector
means of transmission
List 5 factors affecting Disease & Epidemic
1. crowding of host
2. age of population of host
3. health of population of host
4. sanitation levels
5. others-size of parasitic population
infrapopulation
all individuals of a single parasitic species in one host
suprapopulation
all individuals in a single parasitic species in the life cycle in all hosts in an ecosystem
Prevalence
# host infected
% __________________
# examined hosts
Mean Intensity
# individuals of parasite species in sample of host species
_______________________________________
# infected individuals of host species in sample
Intensity
Infrapopulation
site
tissue, organ, part of host where parasite was found
pathogenesis
production and development of diseases

-what happens from time you're infected till you die/better
tolerance
how much one organism can stand

-40 vs. 1 w/ severe effects
poor parasite
immune system easity detects and is quickly dealt with
good parasite
immune system doesn't recognize parasite and can't be dealt with immediately; hard to get rid of
plasmodium
excellent parasite

causes malaria in humans
babesia
excellent parasite

causes malaria in cattle
trypanosoma
excellent parasite

causes African Sleeping Sickness
Which parasites reproduce asexually by means of binary fission?
1. Phylum Sarcomastigophora (sarcodina ameba flagellates)
2. Phylum Ciliophora (ciliates)
3. SubPhylum Sarcodina
Which parasites reproduce asexually be means of multiple fission?
1. SubPhylum Sarcodina
2. Phylum Apicomplexa (coccidia)
What does sichzogony produce?
(cytoplasmic division)

merozoites or merogony
During sichzogony, cells are called what?
schizont, meront, segmentor
sporogony
multiple fission after union of gamates
endopolyogeny or endodyogeny
budding
gametogeny
sexual process
gamonts
cells responsible for producing gamates
syngamy (during meiosis)
union of entire cell
conjugation (during meiosis)
union of nuclei only
Trophozoite
mobile mode
cyst
resting stage, stage of survival