Shared Flashcard Set

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Midterm Review
Intro to Parisitology, Nematodes and Platehelminthes
191
Veterinary Medicine
Undergraduate 2
01/25/2012

Additional Veterinary Medicine Flashcards

 


 

Cards

Term

True or False

 

The esophageal worm in the dogs and cats is Phylasoptera sp.

Definition
False
Term

True or False

 

Eucestodes - Pseudotapeworms.  Have a definitive host.  Absorb nutrients through their skin.

Definition
False
Term
Ascarid eggs have a coating made of what?   
Definition
Albumin
Term
[image]
Definition
Physaloptera
Term

 

—Host: dogs and wild canids; zoonotic
—Location in host:  small intestine
—Life cycle:
—Fecal oral
—Ingestion of paratenic host
—Transmammary
—Transplacental
—Eggs 75-90µm
Definition
Toxocara Canis
Term
Clinical disease of B. procyonis
Definition

 

—Raccoons generally have no clinical signs
—Occasional obstruction and diarrhea can be seen with heavy worm burdens
—Zoonotic
—Causative agent of OLM, VLM, and NLM
 
Term

Common name for Strongyloides?

 

S. stercoralis - dog, cat, human

S. tumiefaciens - dog, cat, human

S. rasomi - pigs

Definition
Threadworm
Term
What is mutualism?
Definition
Symbiotic relationship in which both organisms benefit.
Term
Define Obligatory parasite
Definition
A parasite that must lead a parasitic existence, no free living.
Term
What is a paratenic host?
Definition
Special intermediate host where the parasite doesn't undergo any development.
Term
What is commensalism?
Definition
Symbiotic relationship in which one member benefits while the other neither benefits nor is harmed.
Term
What is a periodic parasite?
Definition
A parasite that does not have to live in/on/within a host, but must visit frequently.
Term
What is phoresis?
Definition
Symbiotic relationship in which a smaller member is mechanically carried by the larger member.
Term
What parasite is the most frequently diagnosed nematode in puppies and kittens?
Definition
Ascarid (Roundworm)
Term
How would you treat Dioctophyma renale?  (Giant Kidney worm)
Definition
Surgical removal
Term
This parasite is passed through feces, sputum, or saliva, but is not common in Indiana?
Definition
Oslerus (Filaroides) osleri
Term
Most common symptoms of roundworms include:
Definition

Diarrhea

vomiting

pot-bellied appearance

Term
What is the common name for Dioctophyma renale?
Definition
Giant Kidney Worm
Term

True or False

 

 

Ancylostoma spp. are zoonotic hookworms.

Definition
True
Term
What is the esophageal worm tht often forms nodules or granulomas in the esophageal wall of dogs and cats?
Definition
Spirocerca lupi
Term
What are the primary target organs that ascarids are found?
Definition
Intestines and stomach
Term
Does Metastrongylus apri have an indirect or direct life cycle?
Definition
Indirect
Term
What nematode is circular in cross section, varies in size, elongate, wormlike, and tapered at both ends?
Definition
Roundworms
Term

Ascaris suum is zoonotic?

 

True or false?

Definition
True
Term

Cestodes

 

JRS

Definition

ribbon like and segmented

 

 

 

Term

Trematodes

 

JRS

Definition

Flattened and leaf shaped

 

 

 

 

Term

Fascioloides magna Diagnosis

 

JRS

Definition

eggs golden-browm with a small adopercular projection opposite the operculum

 

 

 

 

Term

Fasciola sp. Host

 

JRS

Definition

small ruminants, cattle, occasionally man

 

 

 

 

 

Term
Name three types of proglottids (sg)
Definition

 

Immature
Mature
Gravid
 
Term

[image]

JRS

Definition

Alaria sp.

 

 

 

 

 

Term

True or False

 

Echinococcus multilocularis is not zoonotic (sg)

Definition

False

 

Term
[image] (sg)
Definition
Monieziasp.
Term

Trematode Life Cycle

JRS

Definition

 

Complex and indirect life cycle that uses one or most hosts
Eggs pass undeveloped into the environment by feces
Eggs need water to develop L1
L1 either ingested or penetrate skin of first IH
IH always a mullusc
Develop into asexually into other larval stages which eventually leave the snail
Depending on species, either penetrate DH or penetrate another IH and encyst there
Term

Spirometra spp. treatment

 

JRS

Definition
cook thoughly or freeze
Term
Treatment for Paragonimus kellicoti (sg)
Definition

Antheolmintics

Prevent animals from eating crayfish in endemic areas

Term

Anoplocephala spp. Host

JRS

Definition
horse, donkey
Term

Cotyloda lifecycle

JRS

Definition

 

Eggs passed in feces
Eggs hatch in water
Ingested by the first intermediate host
An aquatic crustacean called a copepod
First intermediate host ingested by the second intermediate host
Usually a fish
The definitive host ingest the second intermediate host where they attach to the lining of the SI and begin to produce the strobilus
Term

What is the life cycle of Echinococcus granulosus?

 

 

 

 

 

 

AF

Definition

Domestic & wild ruminants are IH

Pastoral cycle between dogs & sheep

Sylvatic cycle between wolves & their prey

Hydatid cyst found in liver and lungs of IH

Found in western US- AL, MI, MN, WI and Canada

Term

True or False Echinococcus granulosus and Echinococcus multilocularis are 2 species of importance?

 

 

 

 

 

AF

Definition
True
Term

What are the host of Echinococcus multilocularis?

 

 

 

 

 

AF

Definition
wild candids, dogs, & cats
Term

How do you treat and control Echinococcus multilocaris?

 

 

 

 

 

AF

Definition
Anthelmintics, prevent ingestion of rodents in endemic areas, & personal hygiene
Term

Host: dogs, coyotes, wolfs, dingos; zoonotic

 

Domestic and wild ruminants are IH

 

Unilocular hydatid disease in humans

 

Diagnosis: Eggs are taeniid type, segments not found in feces

 

(KB)

Definition
Echinococcus granulosus
Term

What is the life cycle of Fasciola sp.?

 

 

 

 

 

AF

Definition
Larvae leave snail (IH) & encyst on water plant, infection occurs by ingestion of plant, immature flukes penetrate SI & migrate to liver & then enter bile ducts where they mature, eggs passed in feces via bile duct, ppp= 8 wks
Term

Dipylidium caninum is also known as...

 

(KB)

Definition
Flea tapeworm
Term

Host: dogs, cats, wild canids, mustelids, raccoons, occasionally man

 

Location: lungs

 

Clinical signs: anorexia, lethargy, chronic cough

Can see cysts on radiograph

 

Eggs are yellowish brown

 

(KB)

Definition
Paragonimus kellicoti
Term

Host: Dogs, cats, bears, man

 

1st IH: copepod  2nd IH: Fish

 

Clinical disease: Competes for vitamin B12(pernicious anemia)

 

Oval and clear

 

(KB)

Definition

Diphyllobothrium spp.

("broad fish tapeworm")

Term

Host: horse and donkey

 

Location: Sm. and Lg. intestine

 

Found in IH(oribatid mite)

 

Infected while grazing

 

(KB)

Definition
Anoplocephala spp.
Term

This parasite is in the bile ducts and the hosts include: small ruminants, cattle, occasionally man

 

(KB)

Definition
F. hepatica and F. gigantica
Term

T or F:  Fascioloides magna is also the "giant deer" or "giant liver" fluke

 

(KB)

Definition
True
Term
What are Cestodes also known as? (dm)
Definition
tapeworms
Term
What are Trematodes also know as? (dm)
Definition
flukes
Term
True of False: Taenia solium is also known as the beef tapeworm. (dm)
Definition
False! Taenia saginata is the beef tapeworm.

Taenia solium is the pork tapeworm.
Term
True or False: Echinococcus multilocularis eggs cannot be distinguished from those of other taeniid tapeworms. (dm)
Definition
True!
Term
What clinical signs do humans show when infected with dipylidium caninum? (dm)
Definition
Non-specific GI upset, nausea, irritability, itching.
Term
What is Diphyllobothrium spp. also known as? (dm)
Definition
Broad fish tapeworm
Term
Aquatic snails are the 1st IH and tadpoles are the 2nd IH for what fluke? (dm)
Definition
Alaria sp.
Term
What are some clinical signs of Paragonimus kellicoti? (dm)
Definition
Anorexia, lethargy, chronic cough, etc.
Can see cysts on radiograph.
Term
Most of body is composed of reproductive system
Definition
Trematode
Term
T or F - Small strongyles do not migrate. (JC)
Definition
True.
Term
List the 3 large Strongyles. (JC)
Definition
1- Vulgaris
2- Equinus
3- Edentatus
Term
Which adult parasites live in the small intestine or abomasum of primary host, attaches to mucosa, and sucks blood? (JC)
Definition
Hookworms and Strongyles.
Term
T or F - Parascaris equorum has a direct infection with tracheal migration. (JC)
Definition
True.
Term
What is the most common of GI nematodes of swine? (JC)
Definition
Ascaris suum.
Term
T or F - Trichostrongyles have an indirect life cycle. (JC)
Definition
False.
Term
What are the 2 intermediate hosts of the Giant Kidney worm? (JC)
Definition
1- Earthworms
2- Fish or frogs
Term
What technique is used for diagnosing Muellerius capillaris and Dictyocaulus spp? (JC)
Definition
Baermeann technique.
Term
Paratenic Host
Definition
Special intermediate host where the parasite does not undergo any development.
Term
Commensalism
Definition
Symbiotic relationship in which one member benefits while the other neither benefits nor is harmed.
Term
Obligatory parasite
Definition
A parasite that must lead a parsitic existence, no free living.
Term
Mutualism
Definition
Symbiotic relationship in which both organisms benefit.
Term
Definitive Host
Definition
Host that harbors the adult or sexually mature stage of  the parasite.
Term
Phoresis
Definition
Symbiotic relationship in which a smaller member is mechanically carried by the larger member.
Term
Periodic parasite
Definition
A parasite that does not have to live in/on/within a host but must visit frequently.
Term

True or False

 

Nematodes are called roundworms because they are circular in the cross section.

Definition
True
Term

True or False

 

Bleach and other common disinfectants are an adequate wayt to decontaminate for Baylisascaris procynosis.

Definition
False
Term

True or false

 

Dogs, Cats, Foxes and Wolves are hosts for Toxacara Cati.

Definition
False
Term
What is the single best means of preventing contamination of parasites?
Definition
Pick up feces daily.
Term
What is the largest group of helminths?  Elongated, cylindric, non-segmented.
Definition
Nematodes
Term
What parasiticide is used to kill roundworms, flukes, and thorny headed worms?
Definition
Anthelmintics
Term

What is the name for the time period between ingestion of the infective stage of a parasite and passing of eggs in the feces?

Definition
Prepatent period
Term
Baylisascaris procyonis is carried by raccoons and is classified as a:
Definition
Round worm
Term
What is the life cycle of the Round Worm? 
Definition

·         Adult roundworms are in small intestine where they mate

 

·         Female produces unembryonated eggs that are passed in feces

 

 

·         Eggs embryonate where they contain L2 larvae on the ground where they are ingested by the

host and then released from the egg

 

·         L2 larvae grow and migrate to various tissues in young host then migrate to host’s lungs

 

·         Coughed up and swallowed by host

 

 

·         Grow to adulthood in small intestine and begin life cycle again

Term
[image]
Definition
Spirocercalupi
Term

 

 Stomach worms of dogs and cats
Definition
Physaloptera
Term
[image]
Definition
Physaloptera
Term
Ascarids
Definition

 

—Direct life cycle
—May also have transmammary transmission
—Many animals act as PH
—May result in visceral larval migrans
—Larval stage in PH lives in lungs
—Result in coughing and gagging
—Adult phase resides in target organ of primary host
—Most are host specific
Term

 

—Does not attach to host; moves around in small intestine
—Adult worms may “swim” into stomach and cause vomiting, which may then be present in the vomitus
—When passed in feces, usually tightly coiled
Definition
Ascarids
Term

 

What eggs have a deeply pigmented center with rough, pitted outer shell
Definition
Eggs of Toxocara species
Term
Symptoms of Roundworm Infection
Definition

 

—Diarrhea
—Vomiting
—Pot-bellied appearance
Term
[image]
Definition
Toxocaracanis
Term

 

—Host:  cats; zoonotic
—Location:  small intestine
—Life cycle:  similar to T. canis
—PPP: ~8 weeks
—Transplancental transmission does not occur
—Paratenic host transmission big role for adult cats
—No migration occurs; larvae matures to adult in SI within 21 days or so
—Eggs 65-75µm
—Adult has “heart shaped” alae (wing from mouth)
Definition
Toxocara Cati
Term
[image]
Definition
Toxocaracati
Term

 

—Host:  dogs, cats, foxes, and wolves
—Location:  small intestine
—Life cycle:  direct or use of paratenic host
Definition
Toxascarisleonina
Term
[image]
Definition

T. leonina

 

—Oval with smooth, thick shell; colorless
—No protein coat
Term

 

—Host:  raccoons, skunks, woodchucks, dogs; zoonotic
—“raccoon roundworm”
—Location:  small intestine
—Life cycle:  direct development of adults in SI; no migration
—Adult raccoons infected by ingestion of intermediate hosts which include mice, squirrels, rabbits, birds, etc;
—In intermediate hosts, larvae may migrate to eyes and brain causing CNS damage and death
—Raccoons find and eat dead animals, and larvae mature to adults in SI of raccoon
—PPP = 32-38 days
—Young raccoons infected by ingesting infective eggs
—PPP = 50-76 days
Definition
Baylisascarisprocyonis
Term

ID ova on the left:

[image]

Definition
Baylisascarisprocynosis
Term

 

—OLM (ophthalmic larval migrans)
 
Definition

Older patients 7-8+ years

—Associated with low levels
Term

 

NLM (neural larval migrans)
Definition
Younger < 5 years
Associated with high levels
More commonly seen with Baylisascarisprocyonis
related to migration of larvae and larval growth in brain and spinal cord
Term

 

—Usually children < 5 years
—Associated with high level of infection
—Larvae migrate through liver and lungs resulting in fever, hepatomegaly, and pneumonia
—May recover, but will always have larvae in lungs and liver
—No effective treatment, but there is supportive therapy
 
Definition
—VLM (visceral larval migrans)
Term

Common name for Trichuris?

 

T. Vulpis - canine

T. suis - pig

T. ovis - cattle, sheep and goats

T. campanula & T. serrata - feline

Definition
Whipworm
Term

Common name for Toxocara?

 

T. canis - canine

T. cati - feline

Definition
Roundworm
Term

What is common name for these two:

 

Enterobius vermicularis (human)

and

Oxyuris equi (horse)

Definition
Pinworm
Term

Common name for

 

Dioctophyma renale (canine)

Definition
Giant Kidney worm
Term

Common name for:

 

Ancylostoma caninum - canine

Ancylostoma tubaeform - feline

Ancylostoma braziliense - feline

Uncinaria stenocephala - canine

 

Definition
Hookworm
Term

Common name for

 

Dirofilaria immitis - dogs, cats and ferrets

Definition
Heartworm
Term
What is a definitive host?
Definition
Host that harbors the adult or sexually mature stage of the parasite.
Term

What parasite is easily confused with ascarids?

 

Definition
Physaloptera
Term
How can you control SA hookworms?
Definition

Remove feces frequently.

 

Sunlight, freezing, and some chemicals can kill larvae in the environment.

Term
What are some of the clinical signs of threadworms (strongyloides)?
Definition

Moderate to severe diarrhea (may have blood)

 

Anorexia

 

Dullness

 

Weight Loss

 

Poor growth rate

Term

True or False

 

Only some of the hookworms are zoonotic.

Definition
False - all are zoonotic.
Term
Toxocara canis and Toxocara cati are also known as what?
Definition
Canine and feline roundworms.
Term
Aelurostrongylus abstrusus is a lungworm in which species?
Definition
Feline
Term
Oxyuris equi is also known as what in horses?
Definition
Pinworms
Term
Trichuris vulpis is a parasite in what species and what is the common name?
Definition

Dogs and foxes

 

 

 

Whipworms

Term
What is one scientific name for a whipworm?
Definition

Several Choices:

 

T. vulpis

T. ovis

T.campanula

T. discolor

T. suis

Term
What is the host for pinworms?
Definition
Horse
Term
Which type of worm eggs all look the same?
Definition
Strongyles
Term
Muellerius capillaris is an infection via ingestion of IH (snail/slug) while grazing.  What two hosts and location?
Definition

Sheep and goats

 

 

Lung parenchyma

Term
Dioctophyma renale, AKA "giant kidney worm" of pigs, humans, and carnivores have 2 IH.  What are they?
Definition

1. Earthworms

 

2. fish or frogs

Term
What 7 roundworms belong to Phylum nematoda?
Definition

Roundworms

Hookworms

Threadworms

whipworms

heartworms

lungworms

kidney worms

Term
What is the most frequently diagnosed nematode in young puppies and kittens?
Definition
ascarids (roundworms)
Term
What are the most common symptoms of roundworm infection?
Definition

diarrhea

 

vomiting

 

pot-bellied appearance

Term
What is the most common GI nematode of swine?
Definition
Ascaris suum
Term
How are A. suum and P. equorum treated?
Definition

Deworm pregnant sows and mares

 

Keep pens and stalls clean after birth

 

Dispose of feces properly to maintain parasite free herds

 

sanitation

Term
What adult parasite lives in the small intestine or abomasum of the primary host, attaches to mucosa and sucks blood?
Definition
Hookworms/strongyles
Term

What are the two classes of Platyhelminthes? (sg)

 

Definition
Cestodes (tapeworms) and Trematodes (flukes)
Term
What class are Eucestoda and Cotyloda in? (sg)
Definition

Cestoda

 

Term

Alaria sp. Treatment

  

JRS

Definition

Praziquantel

Albendazole

Prevent ingestion of IH or PH

Cook frog legs well

 

 

 

Term
[image] (SG)
Definition
Taeniid Ova
Term

[image]

JRS

Definition

Fasciola Hepatica

 

 

 

 

 

Term
The "flea tapeworm" (sg)
Definition
Dipylidium caninum
Term
The "broad fish tapeworm" (sg)
Definition
Diphyllobothrium spp.
Term
[image] (sg)
Definition
Anoplocephalaspp.
Term

Alaria sp.  Host

 

JRS

Definition
dog, cat, fox, mink, ect.
Term

[image]

JRS

Definition
Paragonimuskellicoti
Term

Paragonimuskellicoti

Clinical signs

JRS

Definition

Anorexia, lethargy, chronic cough, ect.

Can see cysts on radiograph

Term
(sg)[image][image]
Definition
Dipylidiumcaninum
Term

Moniezia spp. Host

 

JRS

Definition
sheep, goats, cattle
Term
Definitive host of Taenia taeniaeformis? (sg)
Definition
Cats
Term
"beef tapeworm" (sg)
Definition
Taenia saginata
Term
Clinical signs include Anorexia, lethargy, chronic cough, etc. Can see cysts in radiograph (sg)
Definition
Paragonimus kellicoti
Term
Treatment/control of Fascioloides magna (sg)
Definition

 

¤Anthelmintics
¤Do not graze cattle and sheep in pastures contaminated with deer feces
¤Control snails in grazing areas
¤Deer control
Term

What are the key morphologic features of the true tapeworm?

 

 

 

 

 

                                                                    AF

Definition
Long, segmented, flattened, & ribbon-like
Term

What is the scolex of a tapeworm?

 

 

 

 

 

 

AF

Definition
The head which contains 4 suckers
Term

What is the lifecycle of True Tapeworms?

 

(KB)

Definition
On land and one intermediate host
Term

What is the lifecycle of Pseudotapeworms?

 

(KB)

Definition
In water and two intermediate host
Term

Tapeworms attach to the intestine via the...

 

(KB)

Definition
Scolex
Term

The "Beef Tapeworm" is also known as...

 

(KB)

Definition
Taenia saginata
Term

What is the most common tapeworm found in th SI (small intestine) of dogs & cats?

 

 

 

 

AF

Definition

Dipylidium caninum

"flea tapeworm"

Term

The "Pork Tapeworm" is also known as...

 

(KB)

Definition
Taenia solium
Term

What is the most common tapeworm found in the Sm. intestine of dogs and cats?

 

(KB)

Definition
Dipylidium caninum or Flea tapeworm
Term

How would you treat/control broad fish tapeworms?

 

(KB)

Definition

Cook thoroughly or freeze fish

 

Treatment of sewage

Term

What is the treatment for Alaria sp.?

 

 

 

 

 

AF

Definition
Praziquantel, albendazole, prevent ingestion of IH or PH, cook frog legs well
Term

True or False   Is Fascioloides magna located in the liver?

 

 

 

 

 

AF

Definition
True
Term

What is the life cycle of Fasciodes magna?

 

 

 

 

 

AF

Definition
Similar ti F. hepatica, cattle & sheep become infected while grazing with deer and elk
Term

T or F:  Trematodes are tapeworms

 

(KB)

Definition
False. Trematodes are flukes.
Term
What is the name for the " beef tapeworm"?
Definition
Taenia saginata
Term

True or False   The "pork tapeworm" is the Taenia solium?

 

 

 

 

 

Af

Definition
True
Term

What is the life cycle of Diphyllobothrium spp. ("broad fish tapeworm")

 

 

 

Af

Definition

1st IH copepod

2nd IH fish

Term

True or False  Is horse & donkey the host of Anoplocephala spp?

 

 

Af

Definition
True
Term
What morphological feature is shared by cestodes and trematodes? (dm)
Definition
They are both dorsoventrally flattened.
Term
What is the life cycle difference between true tapeworms and pseudotapeworms? (dm)
Definition
True tapeworm life cycle is on land and one intermediate host, while pseudotapeworm life cycle is in water and two intermediate hosts.
Term
True or False: Tapeworms do not have a mouth. (dm)
Definition
True!
Term
True or False: Tapeworms can be from 2mm to 10 feet long. (dm)
Definition
True!
Term
What kind of control methods are effective against beef and pork tapeworms? (dm)
Definition
Proper sanitation of sewage and cooking thoroughly (56C) or freezing (-10C for 10 days).
Term
True or False: Most of the trematode body is composed of the reproductive system which includes both male and female organs. (dm)
Definition
True! They are hermaphrodites.
Term
It takes only 2-3 of these flukes to kill a ruminant. (dm)
Definition
Fascioloides magna, the "giant deer" or "giant liver" fluke
Term
Name 4 symptoms of an animal with hookworms. (JC)
Definition
1- Loose stool
2- Anemia
3- Abdominal Discomfort
3- Lethargy
Term
Uncinaria steocephala eggs are similar to _____________ but larger. (JC)
Definition
Ancylostoma spp.
Term
T or F - All Ancylostoma spp. are zoonotic. (JC)
Definition
True.
Term
T or F - Lung worms are common in Indiana. (JC)
Definition
False.
Term
T or F - Whip worms have a direct life cycle. (JC)
Definition
True.
Term
In Muellerius capillaris, sheep and goats ingest what intermediate host to become infected? (JC)
Definition
Snail or slug.
Term
What is the host of Trichuris vulpis? (JC)
Definition
Dogs and foxes.
Term
What is the host of Trichuris ovis? (JC)
Definition
Cattle, sheep, and goats.
Term
A pseudotapeworm has 2 slit-like organelles called bothria. What does a tapeworm have that is "similar"?
Definition
A scolex with 4 suckers.
Term
This is an intestinal fluke that is zoonotic, and transferred via eating frog legs.
Definition
Alaria sp.
Term
True or false:
The life cycle of the pseudotapeworm is more complex than the true tapeworm.
Definition
True.
A pseudotapeworm uses 2 IH, the second of which is infective to the DH.
Term
This pseudotapeworm absorbs vitamin B12 from its host as well as causing intestinal obstruction.
Definition
Diphyllobothrium spp.
Term
The immature proglottid is located where on the tapeworm.
Definition
Closest to the scolex(head).
Term
True or false:
Cestodes are tapeworms and trematodes are flukes.
Definition
True.
Term
The tegument of the tapeworm  is ?.
Definition
The body wall that absorbs the nutrientsacquired from the host's intestine.
Term
True or false:
Tapeworms have a mouth with four teeth.
Definition
False.
Tapeworms do not have a mouth, but they do have four suckers in their scolex.
Term
Proglottid.
Definition
Individual boxlike components of the tapeworm strobila.
Term
Taenia saginata
Definition
"beef tapeworm"
Term
This tapeworm is tiny, only 1.2 - 7 mm in length. It's entire body only has 3 proglottids. It is zoonotic and so dangerous that if it is diagnosed it must be reported to state & federal authorities! Hope it's rare.
Definition
Echinococcus sp.
Term
The most common tapeworm found in the small intestine of the dog and cat.
Definition
Dipylidium caninum
Term
This tapeworm is a "clinical oddity" because it produces an operculated egg (door on one pole of either end).
Definition
Spirometra spp.
Term
Eggs of this are triangular shaped.
Definition
Moniezia expansa
Term
This parasite is a trematode, crayfish is its second IH, and the adult ends up in the lungs of dog/cat host.
Definition
Paragonimus kellicoti
Term

True or False

 

Eucestodes - Pseudotapeworms.  Have a definitive host.  Absorb nutrients through their skin.

Definition
False
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