EXPERIMENT 2, 3, 4, 5, 6, 7 POST LAB Flashcards
Trichina worm
Trichinella spiralis
Pudoc worm
Capillaria philippinensis
Large intestinal roundworm
Ascaris lumbricoides
roundworm of man
Ascaris lumbricoides
Whipworm
Trichuris trichiura
Oxyuris vermicualris
Enterobius vermicularis
Pinworm
Enterobius vermicularis
Seatworm
Enterobius vermicularis
Society worm
Enterobius vermicularis
Larva: 80 to 120 pm by 5.6 um at birth but reaches the size of 065 to 1.45 mm in length and 0.026 to 0.040 mm in with after it enters a muscle fiber
Trichinella spiralis
peanut-shaped with striated shells
Capillaria philippinensis
Ascaris lumbricoides a) Unfertilized 2 layers of the egg shell
Ascaris lumbricoides b) fertilized 3 layers
✓ Chorionic/true shell
✓ Vitelline layer
✓ Protein coat/Albuminous layer
: chitinous layer; secretory product of the egg
✓ Chorionic/true shell
: fertilization membrane; highly impermeable membrane that protects the inner embryo
✓ Vitelline layer
: outermost mamillated layer with a tanning action
✓ Protein coat/Albuminous layer
Barrel-
shaped/japanes
e lantern-
shaped/Footbal
l-
shaped/Lemon
shaped (same
as C. hepatica)
Trichuris
trichiura
consists of a
developing lava
surrounded by a
conspicuous double
layered; thick-walled
colorless shell
Enterobius
vermicularis
•Feeding stage; short and stout
Hookworms Rhabditiform
•Has a long narrow buccal cavity
Hookworms Rhabditiform
•Flask-shaped esophagus
Hookworms Rhabditiform
•Very small genital primordium
Hookworms Rhabditiform
•Feeding stage; short and stout
Hookworms Filariform larva
•Has a long narrow buccal cavity
Hookworms Filariform larva
•Flask-shaped esophagus
Hookworms Filariform larva
•Very small genital primordium
Hookworms Filariform larva
•Feeding stage
Strongyloides stercoralis Rhabditiform
•Flask-shaped and stout
Strongyloides stercoralis Rhabditiform
•Short buccal cavity
Strongyloides stercoralis Rhabditiform
•Conspicuous genital primordium
Strongyloides stercoralis Rhabditiform
•Non-feeding stage with a long and delicate esophagus
Strongyloides stercoralis Filariform
•Forked or notched tail
Strongyloides stercoralis Filariform
A. Parasitic
Strongyloides stercoralis
B. Free-living
Strongyloides stercoralis
Diseases: Necatoriais, Ancylostomiasis
Hookworms
Diseases: Cochin-china diarrhea
Strongyloides stercoralis
Pathology:
1. Due to larval stage
Hookworms
Pathology:
2. Due to adult worms
Hookworms
- petechial hemorrhages
Wakana disease
- microcytic hypochromic anemia
Hookworm anemia
- loss of protein due to loss of blood and lymph nodes
Hypoalbuminemia
skin-penetration
Hookworms
-penetration; autoinfection
Strongyloides stercoralis
- 1 pair of semilunar cutting plates, dorsal median tooth,
deep pair of triangular subventral lancets
Necator americanus BUCCAL CAVITY
- fused spicules; deep cleft
Necator americanus COPULATORY BURSA
- bipartite dorsal rays
Necator americanus COPULATORY BURSA
- 2 pairs of fused ventral teeth
Ancylostoma duodenale BUCCAL CAVITY
- unfused spicules; shallow cleft
Ancylostoma duodenale COPULATORY BURSA
- tripartite dorsal rays
Ancylostoma duodenale COPULATORY BURSA
- 3 pairs of ventral teeth
Ancylostoma caninum BUCCAL CAVITY
- bursa is supported by long, slender rays
Ancylostoma caninum COPULATORY BURSA
- 1 pair of larger outer teeth and 1 pair of very inconspicuous
median teeth
Ancylostoma braziliense BUCCAL CAVITY
- bursa is supported by short stubby rays
Ancylostoma braziliense COPULATORY BURSA