Scelta multipla
During embryonic development, what major event occurs during gastrulation?
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28. Human Development
Embryonic Development (Weeks 3-8)
Scelta multipla
During which stage of early embryonic development do the primary germ layers form?
A
Gastrulation
B
Fertilization
C
Blastulation
D
Cleavage
Guida verificata passo dopo passo1
Understand the stages of early embryonic development: Fertilization, Cleavage, Blastulation, and Gastrulation.
Fertilization is the process where the sperm cell fuses with the egg cell to form a zygote.
Cleavage is the series of rapid mitotic cell divisions that the zygote undergoes, leading to the formation of a multicellular structure.
Blastulation follows cleavage and results in the formation of the blastula, a hollow ball of cells.
Gastrulation is the stage where the blastula reorganizes into a three-layered structure known as the gastrula, forming the primary germ layers: ectoderm, mesoderm, and endoderm.
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