the observations on organogenesis of the respective muscles , carried out at present upon 13 human embryos with 12 to 32 mm crown-rump length and 5 fetuses with 35 to 65 mm crown-rump length , revealed that , mm . peronei digitorum primordium initiated its development as a muscle of two fingers ( m. peroneus digiti iv . et m. peroneus digiti v ) , passed through its one-finger form ( m. peroneus digiti v ) and usually terminated with its complete reduction .
C0868971
human embryos
C0678727
primordium