Page 50 - Endokrin Sistem Histolojisi-Dr. Öğr. Üyesi Tuğçe Önel
P. 50

Development of Thyroid Gland




     The thyroid gland appears as an epithelial proliferation in the  floor  of the pharynx

     between the            tuberculum impar and the copula at                           a point       later     indicated        by the


     foramen cecum.

     Subsequently,  the  thyroid  descends  in  front  of  the  pharyngeal  gut  as  a  bilobed


     diverticulum.  During  this  migration,  the  thyroid  remains  connected  to  the  tongue

     by a narrow canal, the thyroglossal duct. This duct later disappears.
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