Nematodes: Class Secernentia Flashcards
INTESTINAL ROUNDWORMS
A. lumbricoides is also called the ___________
Giant Intestinal Roundworm
Where do A. lumbricoides inhabit?
Small intestine (ileum)
A. lumbricoides causes what infection?
Sandbox infection
Loeffler’s Syndrome can be found in what type of parasite infection?
Ascariasis
What method is used to diagnose Ascaris bolus?
Xray
“Pinworm” “Seatworm” is what kind of parasite?
E. vermicularis
E. vermicularis has a ______ shaped ova.
D-shaped
Male E. vermi parasites dies after what?
after COPULATION
Female E. vermi dies after ?
after DEPOSITION OF EGGS
Give 2 distinct characteristic that is present in an adult E. vermi parasite.
Cephalic alae & Esophangeal bulb
PRURITUS ANI is caused by what parasite?
E. vermicularis
What is used to diagnose Enterobiasis?
Graham’s Scotch tape method (Perianal swab)
Cellulose Tape method is best done during what time of the day?
early in the morning before defecation or bathing
The infection of this parasite may cause children to vomit up bolus of worms or cough up immature worms.
A. lumbricoides
What parasite causes the migrating worms to cause pruritis vulva or vaginitis?
E. vermicularis
What is the NEW WORLD HOOKWORM?
Necator americanus
The “American Murderer” is also called the ________
N. americanus
A. duodenale is also called _________
OLD WORLD HOOKWORM
GERM OF LAZINESS
Ancylostoma caninum is the ______________
DOG HOOKWORM
What parasite is the CAT HOOKWORM?
A. brazilienze
Number of cells in a Hookworm egg
2-8 cells
What hookworm that has a pair of semilunar cutting plates?
N.americanus
What parasite that has a deep cleft, tips, Bipartite?
N. americanus
What parasite that has a shallow cleft, tips, TRIPARTITE?
A. duodenale
what is the Hookworm IS?
Filariform larva
A. duodenale causes what kind of disease when ingested?
Wakana Syndrome
Hookworm that has 3 ventral pairs of fused teeth
A. caninum
This hookworm has 2 ventral pairs of unfused teeth
A. braziliense
What is an ectoparasite hookworm?
A. caninum & A. braziliense
Cutaneous Larva Migrans are caused by what parasites?
A caninum, braziliense
Heavy Hookworm infections can cause what type of anemia?
IDA
What are the diagnostic methods used in Hookworm infection?
Direct microscopy
Kato katz
Caproculture: Harada-Mori technique
What roundworm that is a parthenogenic parasitic female?
S. stercoralis
S. stercoralis is also called?
Threadworm
What methods are used to diagnose S. stercoralis infection?
Direct microscopy
Enterotest
Baele’s String Test
Harada Mori Technique
Caproculture
Baermann Technique
Who are considered the “UNHOLY THREE”?
“HAT”
Hookworm
A. lumbricoides
T. trichiura
What parasites are capable of heart to lung migration?
‘ASH’
A. lumbricoides
S. stercoralis
Hookworms
Compare the Hookwom Rhabditiform larva to S. stercoralis
LONG buccal cavity - SHORT buccal cavity
SMALL genital - LARGE genital
Compare the Hookwom Filariform larva to S. stercoralis
SHORT esophagus - LONG esophagus
POINTED tail - NOTCHED/FORKED tail
S. stercoralis DS?
Rhabditiform larva
Now World Hookworm Pathogenesis?
Ground itch, Coolie itch, Dew ituch
Loeffler’s syndrome
IDA
The Hookworm egg hatches in soil for hoe many hours/days?
1-2 days
Necator is common what country?
SE USA/ Africa
Ancylostoma is prevalent in what country?
Europe / South America
This hookworm has shallow cleft, and Tripartite tips
A. duodenale
Describe the Ascaris Fertilized Egg
VGA
Vitelline membrane
Glycogen membrane
Albuminous layer
Describe the characteristics of an Ascaris Unferlized egg.
VA
Vitelline membrane
Albuminous layer
The decorticated egg of an Ascaris has what distinct characteristics?
VG
Vitelline membrane
Glycogen membrane
The size of an adult A. lumbricoides
20-35 cm
The size of an adult E. vermicularis
2-13 mm
