Die Metamerie beruht auf der Aufteilung des ursprünglichen Embryos in mehrere Segmente.
Ausser den Somitomeren 1 bis 7, die keine Somiten bilden, die aber an der Bildung des Mesoblasten der Schlundbögen beteiligt sind, bilden die anderen Somitomere 42 bis 44 Somiten in kranio-kaudaler Richtung.
Dabei werden ab dem 25. Tag 3-4 Somiten pro Tag gebildet 9.
embryology.chThe metameres are based on the division of the original embryo into several segments.
Except for the somitomeres ( 1 to 7 ) that form no somites, but are involved in the formation of the pharyngeal arch mesoblast, the others form somites in the cranio-caudal direction.
After the 25th day 3-4 somites per day are formed thereby 9.
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