protozoa & helminths

Question 0

Ascaris lumbricoides (description)

Answer 0

largest intestinal nematode of humans

Question 1

Enterobius vermicularis

Answer 1

Pinworm

Question 2

largest intestinal nematode of humans

Answer 2

Ascaris lumbricoides

Question 3

Enterobius vermicularis transmission

Answer 3

person-to-person

bedding/clothing

Question 4

Ascaris lumbricoides transmission

Answer 4

contaminated soil

Question 5

Ascaris lumbricoides disease presentation (2)

Answer 5

intestinal due to blockage

pulm: Loeffler’s syndrome

Question 6

Trichuris trichiura

Answer 6

whipworm

Question 7

Trichuris trichiura transmission

Answer 7

contaminated soil

Question 8

Trichuris trichiura disease (4)

Answer 8

asymptomatic
frequent painful passage of stools w/ mucus, water, & blood
rectal prolapse
malabsorption- growth retardation, anemia

Question 9

Necator americanus & Ancylostoma duodenale

Answer 9

hookworms

Question 10

hookworm transmission

Answer 10

inadequate disposal of human feces, eggs hatch in soil

Question 11

hookworms feed on?

Answer 11

blood from intestinal mucosa

Question 12

hookworm disease? (2)

Answer 12

blood-filled, pruritic lesions at site of larval penetration

anemia

Question 13

Strongyloides stercoralis

Answer 13

threadworms

Question 14

Strongyloides stercoralis reproduction

Answer 14

2 multiplication cycles: in host or in soil

Question 15

strongyloides stercoralis disease (3)

Answer 15

related to larval migration
GI: diarrhea, constipation, malabsorption
Autoinfection

Question 16

Clonorchis sinensis

Answer 16

Chinese liver fluke

Question 17

Clonorchis sinensis transmission

Answer 17

ingestion of larvae in improperly prepared fish

Far East

Question 18

Clonorchis sinensis site of infection in humans

Answer 18

bilary ducts

Question 19

Taenia solium & Taenia saginata

Answer 19

Tapeworms

Question 20

Taenia solium infects?

Answer 20

pork

Question 21

Taenia saginata infects?

Answer 21

beef

Question 22

only definitive hosts of Taenia

Answer 22

Humans

Question 23

Taenia transmission

Answer 23

poorly cooked meat

Question 24

Taenia severe disease presentation?

Answer 24

Cysticercosis- infection travels in blood, can cause seizures & blindness

Question 25

Diphyllobothrium latum

Answer 25

fish tapeworm

Question 26

Cysticercosis is associated with what helminth?

Answer 26

Taenia

Question 27

Diphyllobothrium latum disease

Answer 27

asymptomatic, pernicious anemia

Question 28

Diphyllobothrium latum reproduction (2)

Answer 28

eggs are released singly, not in proglottids | eggs develop & hatch in water

Question 29

watery diarrhea, no blood | can be an STI

Answer 29

Giardia

Question 30

Giardia transmission

Answer 30

feces in water

Question 31

additional signs of Giardia besides pooping (3)

Answer 31

intestinal pain anorexia Vitamin B12 deficiency

Question 32

bloody diarrhea that can be an STI

Answer 32

amebiasis

Question 33

Amebiasis causative organism?

Answer 33

Entamoeba histolytica

Question 34

Entamoeba histolytica trophozoite

Answer 34

ameboid w/ 1 nucleus

Question 35

Entamoeba histolytica cyst

Answer 35

4 nuclei

Question 36

end result of acute amoebic colitis

Answer 36

ulcers, RUQ pain

Question 37

RUQ pain that mimics appendicitis is caused by?

Answer 37

Entamoeba histolytica

Question 38

Entamoeba histolytica virulence factors

Answer 38

lectin phospholipase amebapore cysteine proteases

Question 39

Cryptosporidiosis disease

Answer 39

self-limiting diarrheal illness in healthy individuals

Question 40

Cryptosporidium reproduction (3 things)

Answer 40

doesn't multiply outside of the host oocytes are the infectious stage both asexual & sexual cycles in the host

Question 41

parasitophorus vacuole

Answer 41

Cryptosporidium

Question 42

Cryptosporidium transmission (2)

Answer 42

cow --> human | STI

Question 43

large, round, acid-fast oocyte associated with which infection?

Answer 43

cryptosporidium

Question 44

causative organism of Cyclosporiasis

Answer 44

Cyclospora cayetanensis

Question 45

has large, autofluorescent oocyst

Answer 45

Cyclospora

Question 46

Cyclosporiasis disease associated w/?

Answer 46

contaminated water & imported foods

Question 47

cyclospora disease

Answer 47

explosive, non-bloody diarrhea, profound fatigue

Question 48

acid-fast positive, autofluorescent oocyte

Answer 48

cyclospora

Question 49

protozoa w/ large central vacuole & multiple nuclei around rim of cytoplasm

Answer 49

Blastocystis hominis

Question 50

microbe of the large intestine zoonotic- from pigs contains macronucleus

Answer 50

Balantidium coli