[The characteristics of the motor activity of rat pups during the milk ejection reflex].
The motor activity of newborn rats sucking on anesthetized mothers was studied during the milk ejection reflex. When sucking before obtaining milk every 22 +/- 12 sec, newborn rats displayed an increased motor activity which lasted for 5 +/- 3 sec and coincided with the period of high-amplitude fluctuations of the pressure exerted on the nipple. The periods (5-10 sec) of increased motor activity were observed simultaneously in two or more rats at intervals of 25-30 sec. Simultaneous activity of the newborn rats was most frequently observed 10-30 sec before reflex rise of milk pressure in the mammary gland. Factors regulating the milk ejection reflex in rats, are discussed.
Kariakin
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Alekseev
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D000818:Animals; D000833:Animals, Suckling; D005260:Female; D008893:Milk Ejection / Q000502:physiology*; D009043:Motor Activity / Q000502:physiology*; D011312:Pressure; D051381:Rats; D012018:Reflex / Q000502:physiology*; D013391:Sucking Behavior / Q000502:physiology; D013997:Time Factors
Osobennosti dvigatel'noĭ aktivnosti krysiat vo vremia refleksa vyvedeniia moloka.