neurula /neu·ru·la/ (noor´u-lah) the early embryonic stage following the gastrula, marked by the first appearance of the nervous system.
neurula
neu·ru·la (n r  -l, -y-l)n. pl. neu·ru·lae (-l   ) An early stage of embryonic development in which neurulation begins. |
neurula
[noo͡r′ələ] pl. neurulas, neurulae
Etymology: Gk, neuron, nerve
an early embryo during the period of neurulation when the nervous system tissue begins to differentiate. The embryo at this level of growth represents a third stage in embryonic development, after the morula and blastocyst stages in humans and higher animals and the blastula and gastrula stages in lower animals. In humans the neurula stage occurs from about 19 to 26 days after fertilization.
neurula
the early embryonic stage following the gastrula, marked by the first appearance of the nervous system.
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