Intro to Parasitology

Question 1

What is the role of the vet in parasitology?

Answer 1

To know which parasites cause disease, which are clinically relevant, which are zoonoses, and the diagnostic tools needed. To minimize impact on production, know treatments used in daily practice, use sustainable interventions to manage.

Question 2

What are the three main classes of parasites that can cause disease in humans?

Answer 2

helminths, ectoparasites, and protozoa

Question 3

What diagnostic method is used to diagnose parasites?

Answer 3

SIS

host Species, site of Infection, Size of parasite

Question 4

What are parasites prevented and treated? How is treatment determined?

Answer 4

parasiticides, sustainable management of host, management of environment

life cycle is used to determine treatment

Question 5

Descibe nematodes.

Answer 5

Roundworms. Free-living or parasitic, elongated/cylindrical, alimentary canal present, sexes usually separate

Question 6

Describe cestodes.

Answer 6

Flat worms/ tapeworms. Flat, NO ALIMENTARY CANAL, scolex (head), strobila (body), proglottid (hermaphroditic)

Question 7

Describe trematodes.

Answer 7

Flat worms/ flukes. Dorso-ventrally flattened, leaf like, oral and ventral suckers

Question 8

Name 4 parasitic insects.

Answer 8

Flies, fleas, lice, hemiptera

Question 9

Name 2 parasitic arachnids

Answer 9

ticks, mites

Question 10

What is the difference between an arachnid and an insect?

Answer 10

Insect: 3 pairs of legs; head, thorax, abdomen; antenna

arachnids: 4 pairs of legs; cephalo-thorax and abdomen; no antennae; palps

Question 11

How are protozoa classified?

Answer 11

By mode of locomotion

Question 12

How is locomotion in protozoa accomplished?

Answer 12

pseudopodia, flagella, gliding movements, cilia