PERÍODO EMBRIONARIO
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Transcript of PERÍODO EMBRIONARIO
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PERÍODO PERÍODO EMBRIONARIOEMBRIONARIO
TerceraTercera
a a
Octava Octava
semanasemana
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ECTODERMOECTODERMO
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ECTODERMOECTODERMO
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Su cierre: día 25ANENCEFALIA
Su cierre: día 27ESPINA BIFIDA: Espina Bífida Oculta Meningocele Mielomeningocele
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DERIVADOS DE LAS CRESTAS DERIVADOS DE LAS CRESTAS NEURALESNEURALES
Tejido conectivo y huesos de la cara y el cráneoTejido conectivo y huesos de la cara y el cráneo Ganglios nerviosos cranealesGanglios nerviosos craneales Células C de la glándula tiroidesCélulas C de la glándula tiroides Tabique troncoconal del corazónTabique troncoconal del corazón OdontoblastosOdontoblastos Dermis de la cara y del cuelloDermis de la cara y del cuello Ganglios espinales (ganglio de la raíz dorsal)Ganglios espinales (ganglio de la raíz dorsal) Cadena simpática y ganglios pre aórticosCadena simpática y ganglios pre aórticos Ganglios Parasimpáticos del tracto gastrointestinalGanglios Parasimpáticos del tracto gastrointestinal Medula suprarrenalMedula suprarrenal Células de schwannCélulas de schwann Células GlialesCélulas Gliales Piamadre y AracnoidesPiamadre y Aracnoides MelanocitosMelanocitos
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Sistema nervioso central Sistema Nervioso periférico Epitelio Sensorial de: oído, nariz y el ojo Epidermis incluyendo pelos y uñas Glándulas subcutáneas Glándula mamaria Glándula Hipófisis Esmalte dentario
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MESODERMOMESODERMO
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MESODERMOMESODERMO MESODERMO PARAXIAL MESODERMO INTERMEDIO MESODERMO LATERAL:
HOJA SOMATICA O PARIETAL
HOJA VISCERAL O ESPLACNICA
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Región cefálica:
Neuromeros Región
Occipital
Somitas
Región Coccígea
SOMITAS (pares):
4 Occipitales 8 Cervicales 12 Torácicos 5 Lumbares 5 Sacros 8 – 10
Coccígeos
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EDAD EN DÍAS Nº DE SOMITAS
20 1-4 21 4-7 22 7-10 23 10-13 24 13-17 25 17-20 26 20-23 27 23-26 28 26-29 30 34-35
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MESODERMO INTERMEDIO:
Cervical y torax: Nefrotomas
Direcc. Caudal: Cordón nefrògeno
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MESODERMO LATERAL
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VASCULOGENESIS - HEMANGIOGENESIS
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Tejidos de sostén: tejido conectivo, cartílago y hueso
Músculo liso y estriado Células sanguíneas y linfáticas,
paredes del corazón y vasos sanguíneos y linfáticos
Riñones, gónadas y los conductos correspondientes
Porción cortical de la glándula suprarrenal
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Revestimiento epitelial del aparato respiratorio
Parénquima de la glándula tiroides, paratiroides, hígado y páncreas
Retículo de amígdalas y el timo Revestimiento epitelial de la vejiga
y uretra Revestimiento epitelial de cavidad
timpánica y trompa de Eustaquio
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3ra semana
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4ta semana
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6ta semana
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