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Amniotic duct

This section passes through the middle of the amniotic duct (Amn. D.). The distal end wall of the duct is thickened and contains a small isolated lumen. A cyst lying in the ventral wall of the yolk sac is probably an evagination of the primitive endoderm. It appears in adjoining sections and is connected to the endoderm by a strand of cells. Section 409.

Fig. 26. Heuser et al., 1945.

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Keywords: amniotic duct, cyst, endoderm

Source: The Virtual Human Embryo.