Embryonic stage — duration?
Fertilization to 8 weeks of pregnancy.
Embryonic stage — duration?
Fertilization to 8 weeks of pregnancy.
Fetal stage — focus?
Growth, organ maturation, sensory development.
Fetal stage — focus?
Growth, maturation, and refinement.
Zygote — formation?
Fusion of sperm and egg.
Blastocyst — development?
Multicellular structure for implantation.
Implantation — occurs?
When blastocyst embeds in uterus.
Organogenesis — period?
During embryonic stage.
Placenta development — role?
Supports nourishment and waste removal.
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1. What does the embryonic stage refer to in human development?
2. How long does the embryonic stage of human development typically last?
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