[Characteristics of the synaptic structure and of the parameters of the electrically excited muscle fiber membrane of fetal and newborn rabbits].
In intensification of the motor adaptive reactions of the fetus under conditions of a not marked inhibition of the gestation dominant there occurred an acceleration of development of the synaptic structure and of the corresponding characteristics of the muscle fibers. In depression of the motor reactions of the fetus under conditions of a sharp inhibition of the gestation dominant there occurred a retardation of the development of the synaptic structure, of the electrophysiological characteristics and of the transverse striations of the muscle fibers, this being regarded as the result of deficiency of the neurotrophic influences of the skeletal muscles in the physiologically immature fetuses and neonates.
D000110:Acetylcholinesterase / Q000502:physiology; D000818:Animals; D000831:Animals, Newborn / Q000502:physiology*; D004558:Electric Stimulation; D004594:Electrophysiology; D004950:Esterases; D005260:Female; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D008564:Membrane Potentials; D009132:Muscles / Q000502:physiology*; D009929:Organ Size; D011247:Pregnancy; D011817:Rabbits; D013569:Synapses / Q000201:enzymology / Q000502:physiology*
D004950:Esterases; D000110:Acetylcholinesterase
Osobennosti sinapticheskoĭ struktury i parametrov élektrovozbudimoĭ membrany myshechnykh volokon plodov i novorozhdennykh krolikov