Aphasmid Flashcards
Has a single ovary in the posterior part of the body
T. Spiralis
In T. Spiralis where do you find their vulva?
Anterior fifth
T. Spiralis: oviparoudps or larviparous
Larviparous
Can live for 30 days which capable of producing
1500 larvae or more in her life time
MALES
1.5mmx0.04mm
posterior end: ventrally curved with two lobular caudal appendages
it has a single testis located near the posterior part of the body Joined in the mid-body by the genital tube
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Can live for 30 days which capable of producing
1500 larvae or more in her life time
T. spiralis female
it has a single testis located near the posterior part of the body
T.spiralis male
Joined in the mid-body by the genital tube which extends up to the cloaca
T. Spiralis
Has a 1 pair of caudal appendages and two pairs of papillae
T. spiralis: Cloaca
Main habitat of t spiralis
Small intestine
Skeletal muscle (larva)
Final host of t spiralis
Hogs, rats, man
Accidental host of t spiralis
Man
Infective stage of t spiralis
Encysted larvae
Life cycle of t spiralis
Blind alley cycle
What requires Requires 2 hosts in order to complete the life cycle
T. spiralis
What kind of cycle Requires 2 hosts in order to complete the life cycle
Blind alley cycle
Dead en in infection
Human
This is where t spiralis travel up to the muscle
Circulation
T. Spiralis Phase: Usually seen in the first week of infections
Intestinal phase
Phase t,
It is a tiny nematode that resides in small intestine of humans
and the esophagus has rolls of secretory cells called
stichocytes.
cAPILLARIA PHILIPPINENSIS
Infective stage, embryonated ova
C. hepatica
Definitive Hosts: rats, dogs, cats, monkeys and
rarely in human
C. hepatic
lemon – shaped” eggs
C.hepatica
resembles that of Trichuris trichiura except the polar plugs
C. hepatica
males are half as long as the female with slightly chitinized spicule
C. hepatica
Outer shell shape of C.hepatica
Pitted like golf ball
Less resistant to dessication, heat and cold compared to Ascaris lumbricoides
Trichuris trichuria
Barrel/football-shaped, Japanese lantern
Trichuris trichuria
anterior three-fifths is attenuated ()
T. trichuria
stichosoma type of esophagus
T. trichuria
inverted spiculate at the posterior portion of the
male
Trichuris trichuria
bluntly rounded posterior end
Female T.trichuria
Embryonic development takes in what place
Outside of the host
Unhatched infective first stage is produced in what week?
3 weeks
Favorable environment
Warm, moist and shaded soil
Bloody or mucoid diarrhea
Truchuriasis
Adults are blood red in color and attenuated (slightly) on both
ends
Dioctophyma renale
Infective stage: 3rd stage larva
Dioctophyma renale
Infective stage: 3rd stage larva
D.renale
Kidney (typically the right kidney) and less frequently
to the abdominal cavity of mammals
D.renale
It destroys the kidney substance leaving an
enlarged cystic shell containing the coiled worm
and purulent material.
D.renale
ellipsoidal and brownish-yellow
D.renale
deeply sculptured depressions
D.renale
Diagnosis: eggs in urine
D.renLe
Vomiting often occurs when the third larval stage penetrates
into the wall of the stomach
D.renale
attenuated (slightly) on both ends
D.renale
Bell-shaped copulatory bursa
not supported by rays; covering of papillae
D.renale male
vulva: midventral near anterior
D.renale female
Definitive - Mink, dogs, foxes, and other carnivores;
fish eating mammals
D.renale
Intermediate - Oligochaete annelids, earthworms
D.renale
Paratenic - Fish and frogs.
D.renale
Life span: 5 years
D.renale