part of
part of
develops_from
tissue
endocrine system
chordate pharynx
primordium
thyroid primordium
AAO:0011106
BTO:0004709
EHDAA2:0002033
EHDAA:952
EMAPA:16361
In all vertebrates the thyroid arises from the ventral aspect of the second pouch
Note that we follow EHDAA2 in dividing this into endoderm and mesenchyme. In this ontology we place the broad developmental relationship at this level, and include specific relationships to the pharyngeal endoderm at the level of the endoderm
Portion of tissue part of the pharyngeal endoderm that is fated to become thyroid follicle[ZFIN:curator].
TAO:0001081
The initial thyroid precursor, the thyroid primordium, starts as a simple midline thickening and develops to form the thyroid diverticulum. This structure is initially hollow, although it later solidifies and becomes bilobed. The 2 lobes are located on either side of the midline and are connected via an isthmus.
UBERON:0003091
UMLS:C1519512
XAO:0000444
ZFA:0001081
thyroid primordia
uberon
endoderm-derived structure
pharyngeal pouch 2