II. Physiology: Spinal Cord development (Peripheral nervous system)

  1. Differentiation: 3-4 weeks
  2. Completely forms: 20 weeks

III. Physiology: Brain development (Central nervous system)

  1. Differentiation: 3 weeks
  2. Completely forms: 28 weeks
  3. Brain Teratogen susceptibility
    1. Highly Sensitive: 3-5 weeks
    2. Less Sensitive: 6-38 weeks

IV. Physiology: Eye development

  1. Differentiation: 3 weeks
  2. Completely forms: 20-24 weeks
  3. Eye Teratogen susceptibility
    1. Highly Sensitive: 4-8 weeks
    2. Less Sensitive: 8-38 weeks

V. Physiology: Olfactory system development

  1. Differentiation: 4-5 weeks
  2. Completely forms: 8 weeks

VI. Physiology: Auditory system development

  1. Differentiation: 3-4 weeks
  2. Completely forms: 24-28 weeks
  3. Ear Teratogen susceptibility
    1. Highly Sensitive: 4-9 weeks
    2. Less Sensitive: 9-12 weeks

VII. Physiology: Respiratory Tract Development

  1. Differentiation: 5 weeks
  2. Completely forms: 24-28 weeks

VIII. Physiology: Heart Development

  1. Differentiation: 3 weeks
  2. Completely forms: 6 weeks
  3. Heart Teratogen susceptibility
    1. Highly Sensitive: 3-6 weeks
    2. Less Sensitive: 6-8 weeks

IX. Physiology: Gastrointestinal tract development

  1. Differentiation: 3 weeks
  2. Completely forms: 24 weeks

X. Physiology: Renal development

  1. Differentiation: 4-5 weeks
  2. Completely forms: 12 weeks

XI. Physiology: Genital development

  1. Differentiation: 5 weeks
  2. Completely forms: 7 weeks
  3. External Genitalia Teratogen susceptibility
    1. Highly Sensitive: 7-9 weeks
    2. Less Sensitive: 10-38 weeks

XII. Physiology: Face Development

  1. Differentiation: 3-4 weeks
  2. Completely forms: 8 weeks
  3. Lips Teratogen susceptibility
    1. Highly Sensitive: 5-6 weeks
    2. Less Sensitive: 6 weeks
  4. Teeth Teratogen susceptibility
    1. Highly Sensitive: 6-8 weeks
    2. Less Sensitive: 9-20 weeks
  5. Palate Teratogen susceptibility
    1. Highly Sensitive: 6-8 weeks
    2. Less Sensitive: 9 weeks

XIII. Physiology: Limb Development

  1. Differentiation: 4-5 weeks
  2. Completely forms: 8 weeks
  3. Arms Teratogen susceptibility
    1. Highly Sensitive: 4-7 weeks
    2. Less Sensitive: 8 weeks
  4. Legs Teratogen susceptibility
    1. Highly Sensitive: 4-8 weeks
    2. Less Sensitive: 8-9 weeks

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Ontology: embryologic (C0013943)

Definition (MSH) Used with organs, regions, and animal headings for embryologic and fetal development. It is used also with diseases for embryologic factors contributing to postnatal disorders.
Concepts Functional Concept (T169)
MSH Q000196
English EMBRYOL, EM, embryologic, embryology