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 ]
This is just here as a test because I lose it
Term information
database cross reference
- NCIT:C34312
- XAO:0000444
- TAO:0001081
- null:http://linkedlifedata.com/resource/umls/id/C1519512
- ZFA:0001081
- AAO:0011106
- EHDAA2:0002033
- EMAPA:16361
- EHDAA:952
- BTO:0004709
- UMLS:C1519512 (ncithesaurus: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
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