Introduction to Parisitology Flashcards Preview

RUSVM PID Exam#1 (Orange semester Fall 2016) > Introduction to Parisitology > Flashcards

Flashcards in Introduction to Parisitology Deck (26)
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1

A smaller organism that lives on or in and at the expense of a larger organism called the host?

Parasite

2

What is the role of the veterinarian in regards to Parasitology?

To equip with information on parasites you will need as a veterinarian in North America

-which cause disease
-clinically relevant
-which are zoonoses
-diagnostic tools
-minimize impact on production (super important)
-treatments used daily in practice
-sustainable interventions to manage

3

3 main classes of parasites that can cause disease in humans?

-helminths
-ectoparasites
-protozoa

4

Cysts (neurocysticercosis) in brain cause?

Epilepsy, blindness, madness and death

5

Diagnostic methods of parasites (SIS)

-Host species
-Site of infection
-Size of parasite

6

Explain diagnostic methods?

-Understand the parasites
-Select the samples to collect
-Select appropriate diagnostic methods

7

Treatments and prevention of parasites?

-Parasiticides
-Sustainable management of the host
-Management of the environment
-Life cycle is used to determine treatment and prevention

8

Most puppies get hook worms by?

Transmammary

9

Example of an ectohost that is commonly found in cats and dogs?

Flea

10

The most common dermatological disease in dogs in the United States

Flea allergy demititus

11

Dirofilaria immitis causes?

heartworm (also visible in blood smear) transmitted by mosquitos

12

Most puppies are born with?

Round worms, transferred to them through the placenta

13

Phylum Nemathelminthes are commonly known as?

Roundworms

14

Phylum platyhelminthes is commonly known as?

What are the 2 classes?

Flat worms

(Class cestoda-tapeworms)
(Class trematoda-flukes)

15

Phylum Arthropods are comprised of these two classes and make up 80% of all animal species?

Class-Insecta
Class-Arachnida

16

Subkingdom Protozoa are comprised of these 2 phylums?

-Mastigophora
-Apicomplexa

17

Roundworm class?

Nematoda

18

Nematodes(roundworms) characteristics?

-Free living parasite
-Elongated
-Alimentary canal (mouth or anus)
-Sexes usually separate
-Life cycle direct or indirect

19

Cestodes (tapeworms) characteristics?

-Flat body and no alimentary canal (they absorb everything instead)
-Scolex (head-holdfast organ)
-Strobila (body) with proglottids(segments of the body)
-Each proglottid-hermaphroditic

-Indirect lifecycle
-Types of characteristic larval stages

20

Trematodes(flukes) characteristics?

-Dorso-ventrally flattened
-Leaf-like
-Oral and ventral suckers

-Indirect life cycle-molluscan IH
-Usually genitally independent

21

Examples of Arthropods?

-Flies
-Fleas
-Lice
-Bed bugs

22

Examples of Arachnids?

Ticks
Mites

23

How to identify insects?

Adults: 3 pairs of legs

Head, thorax, abdomen

Antenna

24

Identification of arachnids (ticks and mites)

Nymphs and adults: 4 pairs of legs

Larvae: 3 pairs of legs

Body: cephalo-thorax and abdomen

No antennae, but palps

25

Protozoa are uni or multicellular?

Unicellular (but still contain a true nucleus)

26

Locomotion of protozoans?

-Pseudopodia(falso protrusion of cytoplasm "false feet")
-Flagella
-Gliding movements
-Cilia