Download - Reino animalia
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REINO ANIMALIA
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CRITERIOS DE CLASIFICACION DEL REINO ANIMALIA
Presencia de tejidos
Capas embrionarias
Presencia de celoma
Destino del blastóporo
Simetría
PORIFEROS Parazoos
CNIDARIOS Diploblásticos Acelomados Radial
PLATELMINTOS
NEMATODOS Eu Seudocelomados
Proteros
MOLUSCOS me tomados Bilateral
ANELIDOS ta Triploblásticos
ARTROPODOS zoos Celomados
EQUINODERMOS Deuteros Radial
CORDADOS tomados Bilateral
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PHYLUM PORÍFEROS
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PHYLUM PORÍFEROS
Cuerpo cubierto de poros Hábitat acuático y sésiles o fijos Carecen de tejidos (parazoos) Reproducción asexual por gemación Reproducción sexual por
hermafroditismo
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PHYLUM PORÍFEROS
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PHYLUM CNIDARIOS o CELENTEREOS
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PHYLUM CNIDARIOS o CELENTEREOS
Hábitat acuático y sésiles o móviles Poseen tentáculos con células urticantes
denominadas cnidocitos, que contienen nematocistos para inyectar su veneno
Presentan cavidad gastrovascular o celenterón
Reproducción asexual por gemación Reproducción sexual por hermafroditismo
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PHYLUM CNIDARIOS o CELENTEREOS
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HIDROZOOS ESCIFOZOOS ANTOZOOS
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Un gusano plano: la planaria de agua dulce
Dipylidium caninum, una tenia común de perros y gatos
PHYLUM PLATELMINTOS
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PHYLUM PLATELMINTOS
Gusanos de cuerpo aplanado dorso ventralmente como una cinta
Algunos son parásitos y otros de vida libre Con aparato digestivo incompleto y en
otros ausente como las tenias Reproducción asexual por fragmentación Reproducción sexual por hermafroditismo
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PHYLUM PLATELMINTOS
TURBELARIOS: planaria
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PHYLUM PLATELMINTOS
TREMATODOS: Fasciola hepática
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Fasciola Hepática: Epidemiología
Aproximadamente son 2 millones los casos a nivel mundial que tienen indices de incremento desde el año 1980
Mayor prevalencia en áreas con altos índices de crianza de ovejas y ganado vacuno.
Bolivia (65-92%), Ecuador (24-53%), Egypt (2-17%), and Peru (10%)
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Paragonimiasis: ciclo biológico
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J. Pneumologia vol.26 no.2 São Paulo Mar./Apr. 2000
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Zonas de fibrosis y necrosis en secciones cerebrales
Paragonimiasis
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Paragonimiasis escrotal
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Quiste encapsulado en pulmón
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Paragonimiasis
Lesión cerebral encapsulada
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PHYLUM PLATELMINTOS
CESTODOS: Taenia solium
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Neurocisticercosis
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Quiste Hidatídico: Etiología
Echinococcus granulosus : cestodo de 2-11 x 0,6 mm. de longitud.
En el extremo anterior tiene un escólex con un rostelo evaginable y una doble corona de ganchos.
El escólex se continúa en un cuello corto al que se unen 3 ó 4 proglotis, de los cuales el primero es inmaduro y el último grávido está cargado de huevos.
Los hospedadores definitivos representados por diversos carnívoros, principalmente el perro, mientras que los hospedadores intermediarios son animales domésticos y silvestres en los que junto con el hombre se desarrolla el quiste hidatídico.
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Esquema de un Quiste Hidatídico
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Cir Esp. 2006;79(2):120-2
n engl j med january 30. 348;5, 2003
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Múltiples lesiones en parénquima hepático del lóbulo derecho
N Engl J Med, Vol. 346, No. 16. April 18, 2002
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PHYLUM NEMÁTODOS
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PHYLUM NEMÁTODOS
Gusanos de cuerpo cilíndrico con los extremos afilados
Con una cutícula externa de protección Algunos parásitos y otros de vida libre Poseen aparato digestivo completo Presentan dimorfismo sexual Son dioicos (sexos separados) Reproducción sexual con fecundación interna
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Ascaris lumbricoides
(lombriz intestinal)
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Enterobius vermicularis(oxiuro)
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Strongyloides stercoralis
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Trichinella
spiralis
(triquina)
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Trichuris trichuira(tricocéfalo)
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