The embryonic period of development

In this topic

• Ontogeny and its periods
• Cleavage, blastula and gastrulation
• Organogenesis and the derivatives of the germ layers
• Embryonic membranes and general rules

Key terms

• Ontogeny
• Cleavage
• Blastomere
• Morula
• Blastula
• Blastocoel
• Gastrulation
• Blastopore
• Mesoderm
• Neurula
• Embryonic induction
• Amnion

Read the full topic

The lesson text, diagrams and 20 test questions are on the site — register free to open them.

UZRU