The embryo and its adnexa (appendages or adjunct parts) or associated membranes (i.e. the products of conception) The conceptus includes all structures that develop from the zygote, both embryonic and extraembryonic. It includes the embryo as well as the embryonic part of the placenta and its associated membranes - amnion, chorion (gestational sac), and yolk sac[WP].
cortical arch of kidney
ectoderm-derived structure +
endoderm-derived structure +
ganglion +
iliopsoas
keratin sheath of horn
lateral structure +
material entity in digestive tract +
mesoderm-derived structure +
morphological feature +
multi cell part structure +
multicellular anatomical structure +
muscle structure +
myelin
regenerating anatomical structure +
reticuloendothelial system +
sac +
septum +
sex-specific anatomical structure +
skeletal musculature +
structure with developmental contribution from neural crest +