Universidad Autonoma de Baja California. Unidad de ciencias de la salud. Presentacion con notas sobre desarrollo de arcos faríngeos.

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2. Somites are mesodermal masses formed on both sides of neural tube during
embryogenesis. The process of somite formation is one of the defining characteristics
of vertebrate development. This process occurs in an anterior-to-posterior direction
and in a bilateral, symmetrical manner to provide the formation of the symmetric
musculature and bones of the adult body. Somites first appear on day 20 of gestation
in humans, at the head-neck border and continue to form at a rate of 1 somite every
3-4 days.
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9. Cuerpo ultimo branquial = Migran, esparcen y convierten en C cells del tiroide
calcitonin, mas hueso, por calcio
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