Blood Flukes Intermediate And Types Of Egg Flashcards
S japonicum snail intermediate
Oncomelania quadrasi
S mansoni snail intermediate
1.Biomphalaria
2. Planorbis
3. Tropicorbis
S. Haematobium snail intermediate
Bullinus physopsis
Non -operculated with minute lateral spine.
Tissue or red cells maybe adherent.
S. Japonicum
Non-operculated egg with distinct lateral spine.
S. Mansoni
Non-operculated with distinct terminal spine.
S. Haematobium
Size is 70 - 105 х 50 -80 um
S. Japonicum
Measures 45-70 x 140 -180 um
S mansoni
Measures 112 - 170 x 40 - 70 um.
S. Haematobium
Developmental stage of blood flukes
Egg- larva- adult
Larval stages in dev. Blood flukes
Miracidium- sporocyts- cercaria
Snail will ingest what type lf larva
Miracidim
SAC-LIKE LARVA
Sporocyts
Ciliated Larva released from the egg when hatched
MIRACIDIUM
cercaria that has lost its tail ff: entry to human skin
SCHISTOSOMULE
LARVA THAT INFECT THE VEINS