Structures derived from 3 Germ layers : Embryology

Embryo 3 germ layers ectoderm,endoder,mesoderm

Development Of Fetal Structures From the Three Germ Layers:

The three germ consiting of Ectoderm, mesoderm and endoderm give rise to all the organs and structures in the body. The list of structures developed from 3 primitive germ layers in given below.

Embryo 3 germ layers ectoderm,endoder,mesoderm
Developing embryo

Skin Ectoderm-

  • Epidermis, hair, nails,
  • Cochlear duct, semicircular ducts,
  • Enamel of tooth,
  • Adenohypophysis,
  • Lens of eye,
  • Parotid gland,
  • Mammary gland,
  • Epithelial lining of lower anal canal.


  • All neurons within brain and spinal cord
  • Retina
  • Neurohypophysis
  • Astrocytes, Oligodendrocytes

Neural Crest-

  • Adrenal medulla
  • Ganglia- Sensory , Autonomic
  • Pigment cells
  • Schwann cells
  • Meninges- Pia and arachnoid mater
  • Pharyngeal arch cartilage
  • Ondontoblasts
  • Parafollicular C cells
  • Aorticopulmonary septum
  • Endocardial cushions


  • Muscle ( Smooth, cardiac, skeletal)
  • Extraocular muscles ( Preotic somites)
  • Muscles of the tongue( occipital somites )
  • Connective tissue, dermis of skin
  • Bone, cartilage
  • Blood and lymph vessels
  • Heart
  • Adrenal cortex
  • Spleen’Kidney’Duramater
  • Testes and ovaries

Notocord– Nucleus pulposus


  1. Epithelial lining of Gastrointestinal tract, Trachea, bronchi, lungs
  2. Biliary apparatus
  3. Urinary Bladder, Urethra
  4. Vagina
  5. Auditory tube
  6. Middle ear cavity
  7. Parenchyma of :- Liver, Pancreas, Submandibular glands, Sublingual gland,Thyroid,Parathyroid

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