Structures

• Early cleavage

  A) blastocoel

  
• Late cleavage

  A) macromeres

  B) blastocoel

  C) micromeres

  
• Mid gastrulation

  A) archenteron

  B) gastrocoel

  C) dorsal lip of blastopore

  D) blastopore

  E) yolk plug

  F) blastopore

  G) ventral lip of blastopore

  
• Neurulation

  A) neural fold

  B) neural groove

  
• Neurulation

  A) neural fold

  B) neural tube

  C) notochord

  D) gut

  E) endoderm

  
• Neurulation

  A) neural plate

  B) archenteron

  C) endoderm