final exam Flashcards
(101 cards)
1
Q
what organisms are asexual?
A
arthrospores
blastospores
chlamydospores
2
Q
what organisms are sexual?
A
ascospore
basididspores
zygospores
3
Q
thick walled broad based yeast
A
blastomyces
4
Q
spherules filled with endospores
A
coccidiodes
5
Q
thick walled barrel shaped arthrospore
A
coccidiodes
6
Q
spiny tubercuate macroconidia
A
histoplasma
7
Q
brown sclerotic bodies
A
chromomycoses
8
Q
this walled, spindle shaped macroconidia
A
microsporum
9
Q
colony has a red reverse
A
trichophytom rubrum
10
Q
thin walled club shaped macroconidia in clusters
A
epidermophyton
11
Q
produces germ tube
A
candida albicans
12
Q
causes epidemic ringworm
A
trichopyton tonsurans
13
Q
broad non septate hypae in tissue
A
mucor or rhizopus
14
Q
brown gritty deposits in sputum
A
aspergillis
15
Q
multiple buds in tissue
A
paracoccidiodes
16
Q
causes phycomycoses
A
mucor or rhizopus
17
Q
what causes rocky mountain spotted fever and is transmitted through the tick?
A
rickettsia rickettsi
18
Q
how do rickettsia differ from chlamydia?
A
rickettsia needs an arthropod vector
19
Q
what diseases are caused by chlamydia and how are they spread?
A
psittacosis
inhalation from birds
20
Q
which virus is caused by Bukitts lymphoma?
A
epstein barr
21
Q
what virus is caused by IM?
A
epstein barr
22
Q
which viruses has large red intranuclear inclusions?
A
cytomegalovirus
23
Q
which viruse causes shingles?
A
varicella zoster
24
Q
host in which sexual stage of life cycle occures as an adult
A
definitive host
25
host in which asexual stage of life cycle occurs in larval stage
intermediate host
26
animals other than man can be what kind of host?
resivoir host
27
what protozoan is sluggish with random motility?
entamoeba coli
28
what protozoan has fine even peripheral chromatin?
entamoeba histolytica
29
which protozoan is an oval cyst has large blot like karyosome?
endolimax nana
30
what protozoan has large glycogen vacuoles that stain deeply with iodine?
iodamoeba butschlii
31
which protozoan lacks the cyst stage?
dientamoeba fragilis, thrichomonas vaginalis, entameoba gingivalis
32
a protozoan whos troph is bilaterally symmetrical?
giardia lamblia
33
a pear shaped troph with jerky motility that is found in urine
trichomonas vaginalis
34
a cyst that is lemon shaped with "nipple" on end
chilomastix mesnili
35
how are most protozoan diseases trasmitted?
fecal oral
| ingest the cyst
36
what morphological form of the the blood and tissue flagella is intracellular?
Ld body or Leshmanial forms
37
which LD body or leshmainal forms are found in this form in human cells?
all leishmania and trypanosoma cruzii
38
what is the vector and disease that trypanasoma gambiense causes?
west african sleeping sickness
| tsetse fly
39
what is the vector and disease of leshmania donovani kala-azar?
LD bodies
| sand flies
40
what is the vector and disease of leshmania braziliensis
espundia
| sand flies
41
what is the vector and disease of leshmania tropican
oriental sore and baghdad delhi boid
| sand flies
42
what is the vecotor of chagas disease?
kissing bug
43
describe the principle and interpretation of the Sabin-Feldman dye test
in a positive test toxoplasma will not take up the stain. In absence of the antibodies it will stain blue
44
what disease causes irregular red cells?
ovale plasmodium
45
what disease has 9 merazoites?
malariea
46
what disease has split ring forms?
falcipirum
47
what disease infects retics or younger cells?
vivax
48
what is the intermediate host of all human flukes?
snails
49
what fluke is the usual parasite of sheep and has an extremely large egg
fasciola hepatica
50
what is the largest fluke found in man?
fasciolopsis buski
51
what ova is often confused with diphyllobothrium latum?
paragonimus westermani
52
fluke with an egg that has prominent shoulders and resembles a light bulb
clonorchis sinensu
53
what is the "bladder fluke" associated with bladder cancer?
shistosoma hematobium
54
an ova that can appear in the stool or sputum?
pragonimus westermani
55
tape worm larvae with large bladder
hydatid cyst
56
individual segments of a tape worm
proglottid
57
narrowest part of the tapeworm
neck
58
point of attachement in tape worm
scolex
59
general term for entire tapeworm
strobila
60
intermediate host and infective stage of diphyllobothrium latum
fresh water fish
| plerocercoid (to man)
61
intermediate host and infective stage of taenia saginata
cow
| cysticerous
62
intermediate host and infective stage of taenia solium
pig
| cysticeicus
63
infective stage of hymenolepis nana
fully embryonated egg
64
infective stage of hymenolepis dumunata
cystercoid
65
infective stage of echinococcus granulosus
egg
66
how can taenia saginata and taenia solium be differentiated?
saginata has more branches but no hooks
solium has hooks and 7-14 branches
man can be infected by solium eggs and not saginata eggs
67
which one is the "dwarf tapeworm"
hymenolepsis nana
68
what is associated in nematodes with ejaculating duct necessary for reproduction?
spicules
69
how does the life of nematodes differ from that of trematodes (in general)?
nematodes have a simple life cycle with 1 host and external environment. they alternate between free living and parasite.
70
what is the infective stage of ascaris lumbricoides?
embyonated egg
71
what is the infective stage and common name for enterobius vermicularis
embryonated egg
| pinworm
72
what is the infective stage of necator americanus?
filiform larvae
73
what is the intermediate host and infective stage of trichinella spiralis?
pig
| encysted larvae in muscle
74
what is the infective stage of strongyloides stercoralis
filariform larvae
75
what is the infective stage of trichuris trichiuria
embryonated egg
76
how can rhabditiform larvae of hookworm and strongyloides be differentiated?
Rhab- long buccal cavity
| Stong- short buccall cavity
77
how are infections due to hookworm usually acquired?
penetration of the skin by filariform larvae
78
in the life cycle of strongylodies what does the term autoinfection mean?
person infects themselves like hooworm Rhad.
79
in the life cycle of stongyloides what does the term direct development mean?
directly develops into filariform
80
in the life cycle of stongyloides what does the term indirect development refer to?
rhadbitiform develops into a free living adult
81
what is visceral larval migrans and what is it caused by?
toxocara canis
82
what is cutaneous larval migrans (or creeping eruption)
ancylostoma braziliense
83
what species of protozoa or helminths cna be diagnosed by observation of a stained blood smear?
plasmodium
trypanosome
leishmania
microfilarial larvae
84
what are the distinctive features of filarial worms?
prescence of nuclei helps to ID
learvae are born alive
some have sheath derived from egg shell
have periodicity
85
how do wuchereria bancroftia and brugia malaya differ?
brugia has a much higher # of microfilaria in the blood stream
wuchereria is sheatherd and brugia is not
86
if an ova and parasite exam can not be performed right away, what procedure should be followed?
perform quick macro and micro exam add preservitive and refrigerate within 30 mins
87
what preservative is usually used for the trichrome stain
PVA
88
what is the main use of a permanent stained smear?
to see protozoan cysts and trophs
89
2 major concentration procedures and their principles
formalin ether- sedimentation
| zinc sulfate-floatation
90
what is the specific gravity of the solution employed in the floatation method?
1.18
91
if neg results were obtained using the zinc sulfate method, what would be the best course to follow if the dr still felt the patient had a parasitic disease?
repeat using formalin ether
92
what parasite often causes pneumonitis in children?
ascaris
93
in which two parasitic infections is autoinfection most common?
pinworms and strongyloides
94
species of parasite that can be transmitted through drinking water?
e. histolytical, schistosomes (hookworms)
95
what are some environmental or climatic factors are important in the spread and or prevention of parasitic infections?
```
temp
sand
soil
controlling insect population
water filtration
```
96
bilhariaisis
all schistosomes
97
black water fever
plasmodium falcipirum
98
guinea worm
dracunculus medinensis
99
thread worm
strongyloides stercoralis
100
eye worm
loa loa
101
whip worm
trichuris trichiura
