parasitology/parasitology final

what is the maximum permissible dose of radiation a person can receive per year

5000 millirems/yr

toxoplasmosis is most responsible for

Birth defects or miscarriage

this species, called walking dandruff, is found in dogs, cats, and rabbits

Cheyletiella mites

this mite is found on guinea pigs

Chirodiscoides

digital radiography, ct, mri, and ultrasound are stored using a universally accepted format known as

DICOM

toxocariasis is most commonly caused by

Ingestion of roundworm eggs in contaminated soil or objects

this dipteran is referred to as a sheep ked

Melophagus ovinus

name the larvae that can be found in the nostrils of sheep

Oestrus ovis

name the ear mite found in dogs, cats, and ferrets

Otodectes cynotis

name the ear mite found on rabbits

Psoroptes cuniculi

which protozoan causes abortion in cattle

Tritrichomonas foetus

the term ventral recumbency refers to the patient lying on the

abdomen

where in the adult cow gastrointestinal tract would you expect to find adult haemonchus sp. parasite

abomasum

what does ALARA stand for

as low as reasonably achievable

parascaris equorum is a BLANK that parasitizes the BLANK intestine of horses

ascarid, small

what is the best exposure time for a thoracic radiograph

at maximum inspiration

which technique is least likely to be used to identify a parasitic infection in a small animal practice

baermann technique

which contrast is commonly used for gi studies when perforation is not suspected

barium sulfate

which of the following types of tissue absorb the most radiation

bone

name the fly responsible for depositing its eggs around the fetlock and forelegs

bot flies

the potential for transmission of giardia and crypto from a pet to a human exists, most often these parasites are caught

by drinking contaminated water

which of the following contains a filament consisting of a tightly coiled tungsten wire and is the site of electron generation in the xray tube

cathode

what is the best diagnostic test for oxyuris equi

cellophane tape

which qualitative fecal test yeilds the highest sensitivity

centrifugation

lead shutters installed in the tube head of the xray machine are referred to as

collimators

this obligatory parasite likes to lay its eggs so its larvae mature in kittens and squirrels

cuterebra

what is the genus name of the small strongyle of horses

cyathostomes

this mite resembles a cigar and is natural flora on the skin of cats

demodex

the most common clinical sign of trichuris vulpis infection is intermittent

diarrhea

what is the species name of the sheep parasite where the larvae migrate and develop in the mesenteric lymph node before migrating to the lungs

dictyocaulus filaria

a dairy farmer calls you to come evaluate his herd. the calves seem unthrifty and keep stretching their necks and coughing. which parasite is the most likely cause

dictyocaulus vivparous

which quantitative test can detect the lowest number of parasite eggs

direct smear

what is the scientific name for canine heartworms

dirofilaria immits

which of the following is considered to be the cardinal rule for radiation protection

distance, time, shielding

which radiographic terms describes the view when the primary xray beam enters the dorsal surface and exits the ventral surface of the patient

dorsoventral

meters to measure the rate of exposure is also known as

dosimeter

aelurostrongylus abstrusus intermediate host

earthworm

diplydium caninum intermediate host

flea

taenia pisiformis intermediate host

flea

name the disease caused when flies lay their eggs on an animals wounds

fly strike

the FAMACHA anemia guide is used to determine the presence of what parasite in goats

haemonchus

echinococcus granulosus intermediate host

herbivores

the parasite that causes cutaneous larva migrans is called

hookworm

what species does nematodirus sp. not affect

horse

cathostomes sp. and strongylus edentatus affect what species

horses

what is a definitive host

host where parasite reproduces

which of the following is the best method for storing lead xray gowns

hung up by the shoulders when not in use

the larval form of the tapeworm may lodge in various body sites where they form a fluid filled sac known as

hydatid cyst

which of the following locations is best for storing a dosimeter badge

in a dry, cool place away from the xray room

a tapeworm is an example of

internal parasite

which equine parasite group has three species

large strongyles

immature young parasitic worms are called

larvae

a grid is a series of thin, linear strips made of alternating radiodense and radiolucent material. of what are the radiodense strips made of

lead

when viewing a radiograph, which organ lies in the cranial abdomen between the diaphragm and stomach in small animals

liver

what is the common name for dectyocaulus filaria

lungworm

what is the common name of the parasite that can be detected by conducting a flotation of the coughed up sputum/mucus discharge of an infected ruminant

lungworm

how do the parascaris equorum larvae get from the hepatic portal vein to the lungs

lymphatic and blood vessels

what is the intermediate host for anaplocephala perfoliata

mites

parelaphostrongylus tenuis usually infects deer. list two species where it causes fatality. that is the common name of this parasite

moose, meningeal worm

heartworm larvae must be ingested and develop in the gut of a

mosquito

which imaging modality is superior for demonstrating the brain and spinal cord

mri

ancylostoma brazillense classification

nematode

toxocara cati classification

nematode

uncinaria stenocephala classification

nematode

small strongyles of horses undergo

no migration in the body

in which imaging modality is technetium 99m used

nuclear medicine

what is the historically most important parasite of cattle

o. ostertagia

the infective stage of cryptosporidium is called

oocyst

name two parasites that cause bottle jaw

ostertagia, teladosagia

what are the two diagnostic forms of giardia

ova and L3 larvae

which species causes extreme pruritus around the rectum, causing this host to rub against solid objects like fences, waterers, or feeders?

oxyuris equi, pinworm

all of the following organs are normally seen on a radiograph, except

pancreas

what is the scientific name of the equine cestode

parascaris equinus

a host that is not required, but facilitates transfer of the infective stage to the definitive host is called a

paratenic

which of the following is the best technique to consider for an abdominal xray

peak expiration

what is the time period between the ingestion of the infective stage of a parasite and the passing of eggs in the feces

prepatent period

cystoisospora sp classification

protozoan

giardia classification

protozoan

name the definitive host for baylisascaris

racoon

what does the mri unit use to manipulate hydrogen atoms in and out of an excited energy state

radio waves

which of the following is not considered physical restraint

radiolucent plexiglas

which of the following terms is used to describe the white appearance on an xray

radiopaque

when a patient is receiving an xray and is in the right lateral recumbent position, what marker should be used to denote the correct side

right

echinococcus multilocular intermediate host

rodents

taenia taeniaeformis intermediate host

rodents

leishmania species intermediate host

sandflies

leishmania species intermediate hosts

sandflies

head of the tapeworm is called the

scolex

cochliomyia hominivorx is a reportable disease. what is the common name for this parasite

screwworm

haemonchus contortus is the most important parasite of what species

sheep and goat

pearsonema sp. capillira intermediate host

snail

spirometra sp. intermediatte host

snail

what is the intermediate host for fasciola hepatica

snail or slug

which of the following parasites causes blockage of the cranial mesenteric artery in horses

strongylus vulgaris

what is the scientific name of the large strongyle that does not molt in the portal circulation? where does it go to molt?

strongylus vulgaris, mesenteric artery

what two parasites cause anemia in horses

strongylus vulgaris, strongyloides westerii

what parasite could cause anemia in horses

strongylus westeri

the area of interest when obtaining an xray should be closest to what

the image receptor

for what are grids used on an xray machine

to decrease scatter radiation and to increase the contrast on the radiograph

what does it mean to collimate the beam

to limit the beam exposure just to the area of interest within the image receptor

what classification of parasite is fasciola hepatica

trematode

in equines, which worm has transmission routes through mammary glands and skin penetration

trichostrongyles

which parasite egg appears similar

trichostrongylus ap and unicinaria stenocephala

which parasite is not zoonotic

tritrichomonas foetus

which parasite is transmitted by sexual contact in cattle

tritrichomonas foetus

which imaging modalities produces images without the use of radiation

ultrasound

which of the following is not associated with hookworm infections

visceral larval margins

before taking a radiograph of a patient, what is the proper way to obtain a measurement of the area of interest

when the patient is in the position in which it is to be xrayed