Terminology Service for NFDI4Health
thyroid primordium
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http://purl.obolibrary.org/obo/UBERON_0003091
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. [ http://emedicine.medscape.com/article/845125-overview ]
Term info
Label
thyroid primordium
Subsets
vertebrate_core
external definition
Portion of tissue part of the pharyngeal endoderm that is fated to become thyroid follicle[ZFIN:curator].
external ontology notes
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
has obo namespace
uberon
has related synonym
thyroid primordia
id
UBERON:0003091
taxon notes
In all vertebrates the thyroid arises from the ventral aspect of the second pouch
Term relations
Subclass of:
- endoderm-derived structure
- primordium
- tissue
- develops_from some pharyngeal pouch 2
- part of some endocrine system
- part of some chordate pharynx