[Extraembryonic motor activity during embryogenesis of higher vertebrates].
Rhythmic motor activity of the extra-embryo structures as well as the embryo motor activity play a major part in normal development of higher vertebrates. When comparing birds and mammals, a trend towards complication of the motor activity regulation is observed. Reptiles as a class of the vertebrates have not been studied enough in this respect. Apart from the regular changes of extra-embryonic rhythmic motor activity, there are some changes in this activity depending on alterations of environmental factors (temperature, gas composition of air, etc.). The extra-embryonic rhythmic motor activity seems to take part in adaptation of the embryo to changing environmental conditions thus maintaining homeostasis of developing embryo.
Turpaev
T M
TM
N. K. Kol'tsov Institute of Developmental Biology of the Russian Acad. Sci., Moscow, Russia.
Nechaeva
M V
MV
D000650:Amnion / Q000502:physiology*; D000653:Amniotic Fluid / Q000502:physiology; D000818:Animals; D004622:Embryo, Mammalian / Q000502:physiology*; D004625:Embryo, Nonmammalian; D005314:Embryonic and Fetal Development / Q000502:physiology*; D005260:Female; D010507:Periodicity; D014590:Uterine Contraction / Q000502:physiology