Parasit Lab Midterm

Front 1

What are the four things of Qualitative analysis?

Back 1

Color
Consistency
Contents
Odor

Front 2

Describe how you would make a direct smear.

Back 2

Apply very thin film of feces to slide.
Add 1-2 drops of NaCl or distilled water.
Mix with circular motion.

Front 3

Define fecal float

Back 3

Parasitic eggs are less dense than saturated solutions, so they float to the top and are captured on the cover slip.

Front 4

What is Baerman Technique

Back 4

It isolates larvae from fresh feces (lungworm)

Front 5

Phylum Nemathelminthes

Back 5

Strongyloides stercoralis

Front 6

Strongyloides stercoralis

(Hosts, CLM, Motile Ova, Zoonotic)

Back 6

1. Hosts - Human, K9, Feline
2. CLM - Zoonotic thru larvae penetrating skin; Human infection can last for years.
3. Motile Ova - Ova routinely hatches prior to leaving the body; consequently, free larvae (L1 stage) is usually found in feces.
4. Zoonotic - Yes

Front 7

What is the nickname for Haemonchus contortus? Why?

Back 7

Barber pole worm b/c the white egg-filled uterus spirals around blood-filled gut

Front 8

What is the pathology for Haemonchus contortus?

Back 8

Bottle jaw

Front 9

What is "bottle jaw" caused by?

Back 9

Loss of plasma protein

Front 10

On necropsy, a sheep is found to have severe damage to the small intestine caused by nodules in the mucosa. Name the likely parasite (genus and species).

Back 10

Oesophagostomum columbianum

Front 11

What is the pathology "pimply gut" refer to for Oesophagostomum columbianum?

Back 11

Parasitic adults encapsulate themselves in nodules formed in intestines

Front 12

What is the nickname for Chabertia?

Back 12

Large Mouth Bowel Worm

Front 13

This parasite was found in the feces of a horse that died of colic. Name the likely genus and species?

What causes thromboembolic colic?

Back 13

Strongylus vulgaris

Front 14

What is the nickname for Ancylostomidae?

Back 14

Hookworm

Front 15

What do Ancylostomidae's ova contain?

Back 15

Blastomeres

Front 16

What animal is Ancylostoma caninum?

Back 16

Dog

Front 17

What is the morphology of the ova?

Back 17

They are easily destroyed by freezing.

Front 18

Where is Stephanurus dentatus found?

Back 18

Swine urine

Front 19

What is the intermediate host for Stephanurus dentatus?

Back 19

Earthworm

Front 20

What does Parelaphostrongylus tenuis cause?

Back 20

Neurological disease

Front 21

What is the nickname for Oxyuris?

Back 21

Pinworm

Front 22

What is the host for Oxyuris equi?

Back 22

Equine

Front 23

What is the morphology of Ascaridata?

Back 23

Some have large alae (arrowhead)

Front 24

What animal does Parascaris equorum affect?

Back 24

Equine

Front 25

What is the habitat for Parascaris equorum?

Back 25

Small intestine

Front 26

Ascaris suum

(Host, Habitat, CS, Zoonotic)

Back 26

Host - Swine
Habitat - Small intestine
CS - Milk spots on liver, "thumps"
Zoonotic - yes

Front 27

What kind of damage does Baylisascaris procyonis cause?

Back 27

CNS damage

Front 28

What does Spirocerca lupi cause?

Back 28

Fibrous nodules in wall of esophagus

Front 29

What is the host for Habronema muscae and Draschia megastoma?

What is the intermediate hosts?

Back 29

Host - Equine

Intermediate hosts - house fly and stable fly

Front 30

What are Cutaneous Habronemiasis?

Back 30

Summer sores

Front 31

What is the habitat & dx for Trichinella spiralis?

Back 31

Habitat - striated muscles

Dx - muscle squash prep

Front 32

What is the nickname and causes for Trichuris vulpis?

Back 32

Nickname - Whipworm

Causes - intermittent diarrhea w/mucous

Front 33

What four qualities are included in a qualitative analysis of feces?

Back 33

Color
Consistency
Contents
Odor

Front 34

You suspect a sheep has Haemonchus contortus, what would you expect to find on the fecal?

Back 34

Ova with larvae
Very large strongyle-type ova
Strongyle-type ova

Front 35

You suspect a sheep has Haemonchus contortus, what sort of CS would you expect?

Back 35

Bottle jaw
Anemia
Poor body conditions

Front 36

What is another name for Oesophagostomum?

Back 36

Pimply Gut

Front 37

Is Strongyloides stercoralis zoonotic?

Back 37

yes

Front 38

For which parasite is the Baermann technique used?

Back 38

Lungworm

Front 39

Describe the route of infection of S. stercoralis in humans.

Back 39

CLM - skin penetration

Front 40

What is Chabertia's nickname?

Back 40

Large mouth bowel worm

Front 41

Describe the preparation of a direct smear.

Back 41

Put some stool on a stick and place a small amount on a slide, add 1-2 drops of distilled water and spread stool around in a circle, put a slide cover over the wet area with stool.

Front 42

Describe the preparation of a fecal float.

Back 42

Get a decent stool sample on a stick, put in fecal float container and add fecalsol to about halfway. Mix stool in fecalsol and then snap mixer into place. Fill remainder space with fecalsol until top & put slide cover over top. Let sit for approx 15 mins, then remove slide cover and place it on a slide to read under a microscope.

Front 43

Why is Haemonchus contortus nicknamed the "barber pole worm"?

Back 43

The white egg-filled uterus spirals around blood-filled gut

Front 44

What distinctions help to identify the adults of Oesophagostomum?

Back 44

Cuticular fin or wing-like flange at base of tail

Front 45

What distinctions help to identify the adults of Chabertia?

Back 45

13-20 mm long w/large buccal cavity

Front 46

Describe the pathology of Oesophagostomum.

Back 46

"Pimply gut"

Front 47

What is "pimply gut"?

Back 47

Parasitic larvae encapsulate themselves in nodules formed in the intestines.

Front 48

Describe the morphological characteristics of Strongylus vulgaris.

Back 48

2 dorsal teet; smallest & most pathogenic - only 100 can cause death; thromboembolic colic/aneurysm/embolism.

Front 49

On necropsy, parasites are found in a horse that died of colic. What is the most likely culprit in this case?

Back 49

Strongylus vulgaris

Front 50

Which hookworm of small animals has teeth in its buccal cavity.

Back 50

Ancylostoma

Front 51

What is the nickname for Oxyuris equi?

Back 51

Pinworm

Front 52

What is the nickname for ascarids?

Back 52

Roundworm

Front 53

Name a differential diagnosis for an ataxic pygmy goat w/a head tilt.

Back 53

Parelaphostrongylus tenuis

Front 54

You see typical ascarid ova in equine feces - name the likely parasite.

Back 54

Parascaris equorum

Front 55

What is the roundworm of horses?

Back 55

Parascaris equorum

Front 56

Which large equine strongyle is most pathogenic?

Back 56

Strongylus vulgaris

Front 57

Are any of the Ancylostoma zoonotic?

Back 57

Yes

Front 58

What is the diagnostic test of choice to detect Oxyuris equi infections?

Back 58

Microscopic evaluation of Scotch tape applied to perirectal tissue

Front 59

What is one of the roundworms that attacks the CNS and causes neurolgic signs?

Back 59

Baylisascaris procyonis

Front 60

What is the host of Baylisascaris procyonis?

Back 60

Raccoons

Front 61

What is one of the CS of Ascaris suum?

Back 61

Milk spots on liver

"Thumps"

Front 62

What is the nickname of Oxyuris?

Back 62

Pinworm

Front 63

Give the nickname for this parasite.

What is the classic sign of infection by this parasite?

Back 63

Whipworm (Trichuris vulpis)

Diarrhea w/mucus

Front 64

Back 64

Toxocara canis ova

Dog

Front 65

Back 65

Toxascaris leonina

Front 66

Back 66

Toxocara cati

Front 67

Back 67

Ancylostoma caninum

Dog hookworm

Front 68

Name the ova.

Back 68

Strongyle-type ova

Front 69

Back 69

Ascaris

Front 70

Back 70

Ascaris

Front 71

Back 71

Oxyuris equi

Front 72

Back 72

Baylisascaris procyonis ova

Front 73

Back 73

Trichinella spiralis ova

Front 74

This parasite was found in the feces of a horse that died of colic. Name the likely genus and species.

Back 74

Strongylus vulgaris

Front 75

Name the parasite (genus and species).

Name the condition most often associated w/this parasite.

What causes this condition?

Back 75

Haemonchus contortus adult

Front 76

Back 76

Parascaris equorum adult

Front 77

Back 77

Ascaris suum adult

Front 78

This parasite affects horses. Name the genus and species.

Back 78

Strongyloides westeri

Front 79

This parasite of the dog is associated with esophageal sarcomas. Name the genus and species.

Back 79

S. lupi

Front 80

Motile larvae (not adults) are seen in dog feces. Name two possible sources.

Back 80

Strongyloidy

Stercolaris

Front 81

Name two parasites that cause CNS damage.

Back 81

Parelaphostrongylus tenuis

Baylisascavis procyonis

Front 82

On necropsy, a sheep is found to have severe damage to the small intestine caused by nodules in the mucosa. Nam e the likely parasite (genus & species).

Back 82

Oesophagostomum columbianum

Front 83

What test is performed to find Trichinella spiralis organisms in an animal?

Back 83

Muscle squash prep

Front 84

What is the medical term for infection of open wounds by parasitic ova or larvae, commonly known as "summer sores"?

Back 84

Cutaneous habronemiasis

Front 85

This sample is from a horse with puritis ani. Name the genus & species.

Give the nickname of this parasite.

Is this parasite zoonotic?

Back 85

Draschia megastoma

Pinworm

No

Front 86

This parasite's ova are found only in urine. Name the genus and species.

Name the host.

Back 86

Stephanurus dentatus

Pigs.

Front 87

Roundworms

Back 87

Strongyloids

Trichostrongyloidea

Ascaridata aka Ascarids

Front 88

Brainworm

Back 88

Parelaphostrongylus tenuis

Front 89

Lungworm

Back 89

Metastronglidae

Front 90

How do you diagnose lungworm?

Back 90

Baerman Technique

Front 91

Whipworm

Back 91

Trichuris vulpis

Front 92

Pinworm

Back 92

Oxyuris equi

Front 93

Hookworms

Back 93

Ancylostomidae

Globocephalus

Front 94

Heartworm

Back 94

Dirofilaria wmmitus

Front 95

Eyeworm

Back 95

Thelazia

Front 96

Esophageal worm

Back 96

S. Lupi

Front 97

What is the most common equine parasite?

Back 97

Strongyloidea

Front 98

Describe what a typical strongyle ova looks like.

Back 98

Smooth, ellipsoidal, elongated, thin-shell & embryonated

Front 99

What has teeth in its buccal cavity?

Back 99

Ancylostoma

Front 100

What is a direct smear not good for?

Back 100

Protozoa & Giardia

Front 101

What is Globocephalus the hookworm of?

Back 101

Pig

Front 102

What is the dx test used to detect Oxyuris equi infection?

Back 102

Microscopic eval of scotch tape applied to perirectal tissue.

Front 103

Which equine parasite is associated w/thromboembolic colic?

Back 103

Strongylus vulgaris

Front 104

What is the Macmaster technique?

Back 104

Estimated extent of contamination, used in herd management.

Front 105

What causes black scours?

Back 105

Trichostrongylus

Front 106

Where would you find ova in Stephanurus dentatus?

Back 106

Urine