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Development of the Vertebrate Body Plan

Development of the Vertebrate Body Plan. Temple University School of Medicine. Thomas A. Marino, Ph.D. Department of Anatomy and Cell Biology. DEVELOPMENT OF THE VERTEBRATE BODY PLAN. Early Development 1. Development of Ectoderm A. Neural Tube B. Surface Ectoderm

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Development of the Vertebrate Body Plan

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  1. Development of the Vertebrate Body Plan Temple University School of Medicine Thomas A. Marino, Ph.D. Department of Anatomy and Cell Biology.

  2. DEVELOPMENT OF THE VERTEBRATE BODY PLAN Early Development 1. Development of Ectoderm A. Neural Tube B. Surface Ectoderm 2. Development of Endoderm A. G.I. Tract B. Respiratory Tree C. Pharynx 3. Development of Mesoderm A. Paraxial B. Intermediate C. Lateral

  3. Summary of Week 2 Trophoblast Cytotrophoblast Syncytiotrophoblast Embryonic Ectoderm Embryonic Mesoderm Embryonic Epiblast Mesoderm Extraembryonic mesoderm Blastocyst Primitive Streak Notochordal Process Epiblast Notochord Embryonic Endoderm Amnioblasts Inner Cell Mass Extraembryonic endoderm Yolk Sac Endoderm Hypoblast

  4. Trilaminar Embryo • Ectoderm mesoderm Notochord Endoderm

  5. Trilaminar Embryo paraxial mesoderm paraxial mesoderm intermediate mesoderm lateral mesoderm

  6. Ectoderm Yolk Sac Cut edge of Amnion Primitive Node Primitive Streak

  7. Ectoderm Primitive Node • Epiblast Primitive Streak

  8. Ectoderm Notochord Lack of BMP-4 Presence of: Noggin Chordin Follistatin WNT-4a FGF Forebrain Midbrain Hindbrain Spinal cord

  9. Ectoderm Notochord Neural Plate

  10. Ectoderm Notochord Neural Plate

  11. Ectoderm Oral Plate Prechordal Plate Notochord Neural Plate

  12. Ectoderm Neural Groove Neural Plate

  13. Ectoderm Neural Groove Neural Fold Somites Day 20

  14. Ectoderm Somites Pericardial Bulge Neural Tube

  15. Ectoderm Cranial Neuropore Pericardial Bulge Somites Caudal Neuropore

  16. UNSW Embryology

  17. Ectoderm • The role of the cytoskeleton in the development of the neural tube • Actin filaments

  18. Ectoderm • The role of the cytoskeleton in the development of the neural tube • Microtubules

  19. Development of the Neural Tube

  20. Development of the Neural Tube

  21. Development of the Neural Tube

  22. Development of the Neural Tube

  23. Development of the Neural Tube Surface Ectoderm Neural Crest Cells Neural Tube

  24. Development of the Neural Tube

  25. Development of the Neural Tube

  26. Lateral Body Folding

  27. Lateral Body Folding

  28. Lateral Body Folding

  29. Lateral Body Folding

  30. Lateral Body Folding

  31. Lateral Body Folding

  32. Lateral Body Folding

  33. Lateral Body Folding

  34. UNSW Embryology

  35. Lateral Body Folding Paraxial mesoderm Intemediate mesoderm Surface ectoderm Neural Tube Amniotic Cavity Body Cavity Chorionic Cavity

  36. Surface Ectoderm cranial and sensory ganglia and nerves, medulla of adrenal gland, pigment cells, branchial arch cartilages, head mesenchyme mesoderm • Ectoderm Endoderm epidermis, hir, nails, cutaneous and mammary glands, anterior pituitary gland, enamel of teeth, inner ear, and lens Neural Crest: Neural Tube central nervous system, retina, pineal body, posterior pituitary

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