Lab #4

Question 1

Who lacks an external cuticle: roundworms or flatworms

Answer 1

Flatworms

Question 2

What is the function of tegument on parasitic flatworms

Answer 2

Secretory and absorptive functions

Question 3

What fluke is commonly found in liver and bile duct in wild and domestic ruminants

Answer 3

F. Hepatica

Question 4

What do DH of F. Hepatica ingest that causes disease

Answer 4

Metacercaria

Question 5

Identify the following: found in liver and bile ducts of ruminants

Answer 5

F. Hepatica

Question 6

What fluke infests mesenteric veins of dogs

Answer 6

Heterobilharzia americana

Question 7

What is main reservoir host for H. Americana

Answer 7

Raccoons

Question 8

How is H. Americana transmitted

Answer 8

Skin penetration

Question 9

What parasite causes canine shistosomiasis

Answer 9

H. Americana

Question 10

What is the scolex

Answer 10

Anchoring structure

Question 11

What do proglottids contain

Answer 11

Sex organs and eggs

Question 12

What is the most common tapeworm in dogs and cats

Answer 12

Dipylidium caninum

Question 13

What is the intermediate host for D. Caninum

Answer 13

Fleas or chewing louse

Question 14

What is the infective stage for Dipylidium caninum

Answer 14

Cysticeroid stage

Question 15

__irritate Perianal region in dogs or cats with D. Caninum

Answer 15

Motile gravid proglottids

Question 16

The following tapeworms were obtained from dog/cat with flea infection. What is it

Answer 16

D. Caninum

Question 17

What species does Taenia Pisiformis infect

Answer 17

Dogs

Question 18

How do dogs get T. Pisiformis

Answer 18

Eat rabbit or viscera that contains larvae

Question 19

Farm dog presents with Perianal irrational and diarrhea. Owner informs you that dog hunts rabbits. What is parasite

Answer 19

T. Pisiformis

Question 20

What species does Echinoccocus Granulosus infect

Answer 20

Dogs

Question 21

What type of farms do dogs typically get infected with E. Granulosus

Answer 21

Sheep farming

Question 22

E. Granulosus contains what type of cysts

Answer 22

Hydatid cyst

Question 23

Most dogs don’t develop disease from E. Granulosus by why do we always treat

Answer 23

Zoonotic risk, humans can get uniocular hydatid disease

Question 24

Dog presents for annual exam, fecal shows these. -Owner lives on sheep farm. What parasite caused this and what is red arrow pointing to on right image

Answer 24

E. Granulosus
Red arrow: hydatid cysts

Question 25

Who has external cuticle and body cavity: roundworms or flatworms

Answer 25

Roundowmr s

Question 26

What dx tools can you use to dx parasitic roundworms

Answer 26

1. Fecal float 2. Baermann

Question 27

What species does A. Suum infect

Answer 27

Swine

Question 28

Pig presents with respiratory distress. Liver and lungs were looked at. Liver has milk spots and lungs are damaged. The following parasite was obtained. What is it

Answer 28

A. Suum

Question 29

Where does adult of trichinella infect

Answer 29

Mucosa of small intestine

Question 30

Where do larvae of trichinella species infect

Answer 30

Skeletal muscle

Question 31

What trichinella spp is most commonly associated with domestic animals

Answer 31

T. Spiralis

Question 32

Adult worm on left found in mucosa of small intestine and larvae on right found in skeletal muscle. What is it

Answer 32

T. Spiralis

Question 33

What do hookworms feed on

Answer 33

Mucosa of SI, blood and tissue

Question 34

What is the main cause of canine hookworm disease

Answer 34

Ancylcostoma caninum

Question 35

What is dirofilaria immitis

Answer 35

Canine heart worm

Question 36

What is intermediate host for D. Immitis

Answer 36

Mosquitoes

Question 37

Following parasite was found in canine blood smear and pulmonary arteries. What is it

Answer 37

D. Immitis