title: The timing and sequence of events in the development of the human endocrine system during the embryonic period proper.
mesh_terms: D004702:Endocrine Glands / Q000196:embryology*; D006801:Humans; D010902:Pituitary Gland / Q000196:embryology; D013961:Thyroid Gland / Q000196:embryology; D013997:Time Factors