Ectomesenchyme has properties similar to mesenchyme.
It is either like the mesenchyme, arising from mesodermic cells, or conversely arising from neural crest cells.
[1] The neural crest is a critical group of cells that form in the cranial region during early vertebrate development.
Ectomesenchyme plays a critical role in the formation of the hard and soft tissues of the head and neck, such as bones, muscles, teeth, and notably, the pharyngeal arches.
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