PARASITOLOGY

Question 1

T/F: presence of parasites is accompanied with eosinophilia

Answer 1

FALSE

Question 2

T/F: presence of worm parasites is accompanied with eosinophilia

Answer 2

TRUE

Question 3

T/F: asexual multiplication of parasite occurs in the IH

Answer 3

TRUE

Question 4

3 protozoa associated with PROTRACTED DIARRHEA

Answer 4

Giardia lamblia, Cryptosporidium parvum, Entamoeba histolytica

Question 5

T/F: trophozoite is the active, vegetative stage of protozoa

Answer 5

TRUE

Question 6

flukes and tapeworms belongs to which phylum?

Answer 6

platyhelminthes

Question 7

parasite that causes swimmer’s itch

Answer 7

penetrating schistosome larva

Question 8

T/F: hypersensitivity during parasitic infection is assoc. with increased IGE

Answer 8

TRUE

Question 9

Stain used to examine the nucleus of amoeba

Answer 9

iron hematoxylin

Question 10

if fecal specimens cannot be examined immediately, it should be _______

Answer 10

fixed by formalin or kept at body temp

Question 11

T/F: E. histolytica can grow in cultures

Answer 11

TRUE

Question 12

T/F: stool exam is notsuitable for diagnosis of T. spiralis

Answer 12

TRUE

Question 13

T/F: a fresh stool specimen can show an active larva of S. stercoralis

Answer 13

TRUE

Question 14

T/F: actively moving larva of S. stercoralis and hookworm can still be seen in old stool samples

Answer 14

TRUE

Question 15

specimen shows active amoeba w/ cytoplasm containing ingested RBC, nucleus with central karyosome. Parasite is ____

Answer 15

E. histolytica

Question 16

Blood smear shows RBC with Schuffner dots. Infection is due to ____

Answer 16

P. vivax

Question 17

Thick blood smear taken at night showed microfilaria larva with well developed sheaths

Answer 17

W. bancrofti

Question 18

Blood smear showed trypanosome lying in characteristic C-shape. Organism is _____

Answer 18

T. cruzi

Question 19

Patient presents relapsing malaria. Which is responsible

Answer 19

P. vivax

Question 20

Red cells in blood smear shows multiple infections with ring stages. Indicates infection with:

Answer 20

P. falciparum

Question 21

Worm egg with terminal spine found in urine sample indicates infection with____

Answer 21

S. haematobium

Question 22

Specimen shows protozoan w/sucking disc, 2 nuclei and eight flagella. Organism is ___

Answer 22

G. lamblia

Question 23

T/F: serological test is better than any other test in identifying parasitic organisms

Answer 23

FALSE

Question 24

T/F: CSF is valuable in dx of African trypanosomiasis

Answer 24

TRUE

Question 25

T/F: Dientamoeba fragilis may cause diarrhea, abdominal pain and discomfort

Answer 25

TRUE

Question 26

An amoeba, sometimes found in mouth in conditions of pyorrhea

Answer 26

Entamoeba gingivalis

Question 27

T/F: All amoeba produce cyst

Answer 27

FALSE

Question 28

T/F: in bowel discharges, bacillary dysentery produces a much more baundant cellular exudate than amoebic dysentery

Answer 28

TRUE

Question 29

T/F: eosinophils in large numbers may be seen in the stool of acute bacillary dysentery

Answer 29

FALSE

Question 30

T/F: charcot-leyden crystals are a frequent finding in the stool of acute amoebic dysentery

Answer 30

TRUE

Question 31

T/F: The extra-intestinal abscess caused by E. histolytica are sterile

Answer 31

TRUE

Question 32

A lemon-haped protozoan cyst w/ large nucleus containing a large karyosome near the nuclear membrane is ____

Answer 32

Chilomastix mesnili

Question 33

T/F: Giardia infections can cause enteritis

Answer 33

TRUE

Question 34

T/F: IgM is greatly increased with African trypanosomiasis

Answer 34

TRUE

Question 35

During sleeping stage, what body fluid should be tested to diagnose sleeping sickness?

Answer 35

CSF

Question 36

During febrile stage, what body fluid should be tested to diagnose sleeping sickness?

Answer 36

blood

Question 37

____ sign is theearly diagnostic sign for Chaga's disease

Answer 37

Romana's sign

Question 38

What is the vector of T. cruzi?

Answer 38

Kissing fly (Triatoma)

Question 39

Which stage of C. parvum can be found in stool?

Answer 39

oocyst

Question 40

T/F: Anopheles mosquito is the only vector of malaria

Answer 40

TRUE

Question 41

the female sex cell of malaria is known as

Answer 41

macrogametocyte

Question 42

a malarial parasite undergoing asexual multiplication and characterized by dividing masses of chromatin is called

Answer 42

schizont

Question 43

male malarial parasite is called:

Answer 43

microgametocyte

Question 44

oval presegmenters can be found in which malaria species

Answer 44

P. ovale

Question 45

which malarial species has the longest sexual cycle

Answer 45

P.malariae

Question 46

rosette formation of merozoites in schizonts can be seen in which malarial specie

Answer 46

P. falciparum

Question 47

which malarial parasite enlarges RBC

Answer 47

P. vivax

Question 48

not all stages of parasite occur in peripheral blood in which malaria sp?

Answer 48

P. falciparum

Question 49

multiple infection in same RBC rarely occurs in which malaria sp?

Answer 49

P. vivax

Question 50

crescent shaped gametocyte are characteristic of which malarial sp?

Answer 50

P. falciparum

Question 51

____ fever: a highly fatal disease associated with P. falciparum

Answer 51

Blackwater fever

Question 52

Reservoir animal of Balantidium coli

Answer 52

cochon :)

Question 53

T/F: all flukes require snail as IH

Answer 53

TRUE

Question 54

largest fluke found in man

Answer 54

F. buski

Question 55

T/F: unless the scolex of a tapeworm is removed from the intestine, adult worm may regrow

Answer 55

TRUE

Question 56

T/F: adult tapeworms are only foun d in the smallintestine of man

Answer 56

TRUE

Question 57

sparganosis infection is due to which organism

Answer 57

D. latum

Question 58

what is the largest adult worm

Answer 58

A. lumbricoides

Question 59

which nematode does not ordinarily produce eggs in feces

Answer 59

S. stercoralis

Question 60

which nematode egg is football shaped with typical plug at the end of each pole

Answer 60

T. trichiura

Question 61

T/F: larva of A. lumbricoides can be found in sputum

Answer 61

TRUE

Question 62

T/F: Periorbital edema is an early sign of acute infection of T. trichiura

Answer 62

FALSE (T. spiralis)

Question 63

Old world hookwork

Answer 63

Ancylostoma duodenale

Question 64

T/F: chyluria can be frequently seen in cases of Bancroft's filariasis

Answer 64

TRUE

Question 65

Eye worm

Answer 65

Loa loa

Question 66

Guinea worm

Answer 66

Dracunculus medinensis

Question 67

visceral larva migrans is caused by

Answer 67

Toxocara canis

Question 68

which is not a type of symbiotic relationship: a) parasitism b)commensalism c) mutualism d) symbiolism

Answer 68

D

Question 69

Amoeba move by means of a) pseudopodia b)cilia c) flagellla d) none

Answer 69

A

Question 70

if roundworms:nematodes then flatworms: ______

Answer 70

platyhelminthes

Question 71

T/F: Giardia infections always cause severe diarrhea

Answer 71

FALSE

Question 72

T/F: trichomonas hominis is found in the urethra of man

Answer 72

FALSE

Question 73

T/F: trichomonas vaginalis can be found in the urtethra of man

Answer 73

TRUE

Question 74

Trypanosoma cruzi multiplies in the human body in which form

Answer 74

amastigote

Question 75

T/F:African trypanosomes are transmitted by tsetse flies

Answer 75

TRUE

Question 76

T/F: leishmania are transmitted by bite of sandfly

Answer 76

TRUE

Question 77

Leishmania can be found in macrophages: T/F

Answer 77

TRUE

Question 78

Most characteristic feature of blackwater fever

Answer 78

intravascular hemolysis

Question 79

malarial parasite stage infective to man

Answer 79

sporozoite

Question 80

T/F: ookinete can be foun in humans

Answer 80

FALSE (mosquito)

Question 81

usual location of E. granulosus in man

Answer 81

liver

Question 82

usual location of H. nana in man

Answer 82

intestine

Question 83

usual location of D. caninum in man

Answer 83

intestine

Question 84

patient present with acute diarrhea after eating pork meat is likely to be infected by which nematode?

Answer 84

T. spiralis

Question 85

usual location of D. medinensis in man

Answer 85

subcutaneous tissue