Week 11

Key Events of Human Development during the eleventh week (week 11) following fertilization or Clinical week ((GA}} 13 (LMP).

Day	Stage	Event
71		Filee:EFsizeactual.jpg Endocrine - Thyroid Development colloid appearance in thyroid follicles, iodine and thyroid hormone (TH) synthesis GIT - Stomach - Week 11 - Serotonin containing cells in both the antrum and the fundus.
72
73
74
75
76
77		Week 11 - CRL 68 mm, femur length 12 mm, biparietal diameter 20 mm

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Cite this page: Hill, M.A. (2026, September 20) Embryology Week 11. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Week_11

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© Dr Mark Hill 2026, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G