1 Development of organs – general embriology Elongation of the blastocyst Primitive streak and primitive node (stria primitiva, nodus primitivus) Lamina neuralis (with blue) and the sulcus neuralis. On both sides of sulcus neuralis somites start to develop.
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Development of organs general embriology EN 2016.pdf · Development of organs – general embriology Elongation of the blastocyst Primitive streak and primitive node (stria primitiva,
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Development of organs – general embriology
Elongation of the blastocyst
Primitive streak and primitive node
(stria primitiva, nodus primitivus)
Lamina neuralis (with blue) and
the sulcus neuralis.
On both sides of sulcus neuralis
somites start to develop.
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su: diffuse, epitheliochorial
ca: zonaria, endotheliochorial
eq: diffuse, epitheliochorial
ru: cotyledonaria (multiplex),
synepitheliochorial
ho: discoidea, hemochorial
Types of placenta
Fetal cotyledon + maternal caruncula = placentome
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Bending of the embryo and formation of somites Early differentiation of mesoderm