Embryology development by time intervals

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Information about Embryology development by time intervals
Education

Published on January 16, 2014

Author: imrannurhakim

Source: slideshare.net

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MEDICAL STUDIES EMBRYOLOGY DEVELOPMENT BY TIME INTERVALS

Blastocyst(1)Fe rtilisation 1. Capacitation (P1)Penetrate CR 2. Acrosome (digest ZP) (P2)Penetrate ZP 3. Zona Reaction (impermeable) (P3)Fusion WEEK 2(week of 2’s) Inner cell mass Epiblast (bilaminar germ disc) (2)Cleavage Zygote(2)-> (4)> Morula(16)-> blastocyst(32) WEEK 3 (1)Gastrulation(primitive streak built up and invagination (2)Trilaminar germ disc WEEK 1 Ectoderm Mesoderm Paraxial mesoderm Intermediate mesoderm Intraembryonic visceral Neural tube Neural crest Notochord (INDC) Sclerotome Myotome Dermatome Intra soma mesoderm Intra splanchnic mesoderm Endoderm(folding) WEEK 4 Brain, SC Cranial n, meninges Nucleus pulposus Vetebral bodies Muscles CT, Dermis Parietal serous membrane Visceral serous membrane Epithelial lining of gut, resp, other organs Hypoblast (3)Implantation Trophoblast Cavities (primitive yolk sac = extracoelem cavity) Extraembryonic mesoderm Syncytiohyphoblast Cytotrophoblast Amniotic cavity Amniotic cavity Exocoelamic cavity Extraembryonic Chorionic somatic meso cavity Extraembryonic splanchnic mso Extraembryonic Chorionic cavity cavity Chorionic villi Cytotrophoblast shell Urinary system Pleural membrane, pericardium membrane, peritoneal cavity Placenta Amniotic cavity Chorionic plate Chorionic cavity

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