File:Stage13 and 22 thyroid development a.jpg: Difference between revisions

Latest revision as of 08:50, 22 May 2012

Compilation of cross-sections showing the appearance of the developing thyroid at the beginning of week 5 and at week 8 of embryonic development.

24 days - thyroid begins as a median endodermal thickening in the floor of pharynx
tongue grows - cells descend in neck.
thyroglossal duct - proximal end at the foramen caecum of tongue.
thyroid diverticulum - hollow then solid, right and left lobes, central isthmus.
Week 11 - colloid appearance in thyroid follicles, iodine and thyroid hormone (TH) synthesis

Links: Endocrine - Thyroid Development | Carnegie stage 13 | Carnegie stage 22

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 ==Thyroid Gland Embryonic Development==
+Compilation of cross-sections showing the appearance of the developing thyroid at the beginning of week 5 and at week 8 of embryonic development.
+===Thyroid Timeline===
+* '''24 days''' - thyroid begins as a median endodermal thickening in the floor of pharynx
+* tongue grows - cells descend in neck.
+* '''thyroglossal duct''' - proximal end at the foramen caecum of tongue.
+* '''thyroid diverticulum''' - hollow then solid, right and left lobes, central isthmus.
+* '''Week 11''' - colloid appearance in thyroid follicles, iodine and thyroid hormone (TH) synthesis
+:'''Links:''' [[Endocrine - Thyroid Development]] | [[Carnegie stage 13]] | [[Carnegie stage 22]]
 [[Category:Endocrine]] [[Category:Thyroid]] [[Category:Histology]] [[Category:Carnegie Stage 13]] [[Category:Carnegie Stage 22]]