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EKU Parasitology 1
| Question | Answer |
|---|---|
| association of two different species in which one partner is benefitted and the other is neither benefitted or injured | commensalism |
| association of two different species in which one (parasite) is benefitted and the other (host) is injured to some degree | parasitism |
| type of parasite that cannot live apart from the host | obligatory parasite |
| a parasite that is capable of both free living or commensal existence and may become parasitic | facultative parasite |
| a parasite that establishes on the exterior surface of the host | ectoparasite |
| a parasite that establishes within the body of the host | endoparasite |
| a species which harbors a parasite and provides some metabolic resources to the parasitic species | host |
| host in which parasite passes its adult existence and or sexual reproductive phase | definitive host |
| host in which parasites passes its larval (immature) stage or asexual reproductive phase (required part of the life cycle of that parasites) | Intermediate host |
| host other than normal host species which is accidentally infected, the parasite may or may not continue full development in this host | incidental host |
| animal which harbors a parasite species which is also parasitic for humans and from which humans may become infected | reservoir host |
| entrance int a host, growth, development, reproduction, and transmission of a parasite to a new host | life cycle |
| arthropod or living carrier which transports a parasite from an infected host to a susceptible host, may transmit the parasite passively (mechanical vector) or may be an essential host in the life cycle of the parasite (biological vector) | Vector |
| parasite form infective for humans | infective form |
| parasite form usually detected in the laboratory | diagnostic form |
| object which resembles a parasite form but is either not a parasite at all or not parasitic in the host under consideration | pseudoparasite |
| What is another name for pseudoparasite | artifact |
| What does protozoa mean | lumen dwelling |
| what does nematodes mean | intestinal roundworms |
| Why form of protozoa is entamoeba histolytica | amebae |
| what type of protozoa is balantidium coli | ciliate |
| what type of protozoa is giardia lamblia | flagellates |
| what type of protozoa is entamoeba hartmanii | amebae |
| what type of protozoa is iodamoeba butschlii | amebae |
| what type of protozoa is dientamoeba fragilis | flagellates |
| what type of protozoa is entamoeba coli | amebae |
| what type of protozoa is trichomonas vaginalis | flagellates |
| what type of protozoa is endolimax nana | amebae |
| Enterobius vermicularis is a | nematodes |
| hymenolepis nana is a | cestodes |
| trichuris trichiura is a | nematode |
| ascaris lumbricoides is a | nematode |
| taenia saginata is a | cestodes |
| necator americanus is a | nematodes |
| taenia solium is a | cestodes |
| ancylostoma duodenale is a | nematode |
| strongyloides stercoralis is a | nematode |
| diphyllobothrium latum is a | cestode |
| trichinella spiralis is a | nematode |
| What does the degree of injury in parasitic infection mean | number, size, activity, and location of parasites in the host |
| Where would you expect to find most parasitic infections | the equater |
| Malaria has not been endemic in the US since? | 1940 |
| simple parasites have no | vectors or intermediate hosts (strictly fecal oral route) |
| Complex parasites have | intermediate hosts, vectors |
| Amebas, flagellates, ciliates, hemoflagelates, sporozoa and coccidia are all groups in this classification | protozoa |
| Unicellular eukaryotic microorganism associated with parasitic infections are known as | protozoa |
| what is the mode of locomotion for amebas | pseudopodia |
| what is the mode of locomotion for flagellates | flagella |
| what is the mode of locomotion for ciliates | cilia |
| what is the mode of hemoflagelates | flagella and blood and tissues |
| Metazoa, worm-like invertebrates are are associated with which parasites | helminths |
| Intestinal worms are what kind of helminths | nematodes |
| Tissue roundworms are what kind of helminths | filariae |
| tape worms (segmented flatworms are what kind of helminths | cestoda |
| flukes (non segmented flatworms) are what kind of helminths | trmatoda |
| nematodes, filariae, cestoda, trematoda are all in this group of parasites | helminths |
| this group of parasites have a hard exoskeleton and jointed appendages | arthropods |
| flies, mosquitoes, bugs, lice, and fleas are all what type of arthropods | insects |
| ticks, mites, and other ectoparasites are what type of arthropods | arachnids |
| these are really not parasites but micropredators | arthropods |
| this implies protracted relationship, causing harm, having it for a period of time | parasites |
| How are protozoa grouped | mode of transport or movement |
| this form is infective for humans | infective form |
| this form is seen in the laboratory | diagnostic form |
| in protozoa this is the active vegetative form | trophozoite |
| troph is another word for what | trophozoite |
| in helminths what is the mature stage | adult |
| in helminths what is the egg stage | ovum |
| what is the plural of ovum | ova |
| what does ovum mean | egg |
| in Helminths what is the immature stage | larvae |
| in protozoa what is the inactive, resistant, infectious form | cyst |
| what stool specimen is best for examination | naturally passed |
| urine, mineral oil, or radiography contrast media are all what | contamination of stool |
| How many specimens are usually needed to detect helminth ova | two |
| how many specimens are usually required to detect protozoa | three every other day |
| What is the preservatives used to preserve a stool sample | formalin and polyvinyl alcohol |
| What does PVA mean | polyvinyl alcohol |
| What % of aqueous formaldehyde should be used to preserve fecal specimen | 10% |
| What is the feces to formalin ratio | 1:3 |
| what type of mount is appropriate for formalin | wet mount |
| what type of mount is appropriate for polyvinyl alcohol | permanent smears |
| what is the feces to PVA ratio | 1:3 |
| What does SAF stand for | sodium acetate acetic acid formalin |
| what is normally used in concentration methods | SAF |
| sodium acetate acetic acid formalin is shortened to | SAF |
| a sodium acetate acetic acid formalin prep is normally | permanent smears |
| what specimen should be used in a formalin or PVA mount be | stool |
| what specimen should be used in a wright's or giemsa prep | blood |
| What prep is normally used to detect ova and larvae of helminths | Formalin iodine wet mount |
| what prep is normally used to detect trophs and cysts of protozoa | PVA thin, trichrome |
| PVA is stained with what | trichrome |
| PVA is used to detect what | trophs and cysts of protozoa |
| what is formalin stained with | iodine |
| a formalin iodine wet mount is used to detect | ova and larvae (helminths) |
| what is a thin smear of blood normally used to detect | protozoa and microfilariae |
| what is a thick smear of blood used to detect | malaria |
| what is the processing of a formalin prep | concentration |
| what is a Para-Pak | stool specimen collection device |
| This is stain makes protozoa gray blue to black with Nuclei and cellular inclusions being darker than cytoplasm | iron hematoxylin |
| this stain has better contrast than iron hematoxylin, with protozoan trophs and cysts having a blue green to purple cytoplasm and nuclei and inclusions are red to purple red | trichrome |
| what color is the background in a trichrome stain | green |
Created by:
jnwells03
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