A Video of General Embryology with Mnemonics.

2nd, 3rd and 4th weeks of development:
Week 2 : Bilaminar germ disc
Week 3 : Trilaminar germ disc
Week 4 : Appearance of 4 limbs

Major Neural Crest Derivatives:
 “GAMES”
 Glial cells of peripheral ganglia
 Arachnoid and Pia Sheath
 Melanocytes
 Enteric ganglia
 Schwann cells

 Neuroectoderm derivatives
 Neurons
 Neuroglia
 Neurohypophysis
 piNeurol (pineal) gland

Foregut derivatives
 “Little Embryo People Do Like Swallowing, Producing Gas”
 Lungs
Esophagus
Pancreas
Duodenum (proximal)
Liver
Stomach
Pancreas
Gall bladder

Occurrence of Teratogenesis
TEratogenesis
Between Third and Eighth weeks of gestations.