منابع مشابه
Effects of mammary engorgement and feed withdrawal on microvascular function in lactating goat mammary glands.
The responses of the mammary microvasculature in lactating goats (n = 8) during feed withdrawal (18-20 h) and mammary engorgement (26-28 h of milk accumulation) were compared using an indicator-dilution technique with FITC-albumin and [(14)C]sucrose as the intravascular and diffusible indicators, respectively. Feed withdrawal and mammary engorgement caused a 50-60% decrease in mammary arterial ...
متن کاملModelling the Milk-Ejection Reflex
Whenbabies suckleat amother’sbreast, theyarerewarded intermittently with a let-down of milk that results from secretion of oxytocin (video 1). Oxytocin is synthesisedbymagnocellularneurons in thehypothalamus, and ispackaged in neurosecretory vesicles. Each oxytocin neuron has one axon which projects into the neurohypophysis where it gives rise to about 2,000 nerve endings, all filled with vesic...
متن کاملThe Science behind Milk Ejection
The physiology of milk ejection has been thoroughly studied. In 1910, Ott and Scott (1910) discovered that extracts from the posterior pituitary could cause an increase in milk flow from a cannulated teat and some years later it was observed that the extracts from the posterior pituitary caused an increase in intra mammary pressure (Gaines, 1915). In 1941, it was observed that milk ejection was...
متن کاملDysphoric milk ejection reflex: A case report
Dysphoric Milk Ejection Reflex (D-MER) is an abrupt emotional "drop" that occurs in some women just before milk release and continues for not more than a few minutes. The brief negative feelings range in severity from wistfulness to self-loathing, and appear to have a physiological cause. The authors suggest that an abrupt drop in dopamine may occur when milk release is triggered, resulting in ...
متن کاملMyoepithelial cell contraction and milk ejection are impaired in mammary glands of mice lacking smooth muscle alpha-actin.
Mammary myoepithelial cells are specialized smooth musclelike epithelial cells that express the smooth muscle actin isoform: smooth muscle alpha-actin (ACTA2). These cells contract in response to oxytocin to generate the contractile force required for milk ejection during lactation. It is believed that ACTA2 contributes to myoepithelial contractile force generation; however, this hypothesis has...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of Medicine
سال: 1956
ISSN: 0035-9157
DOI: 10.1177/003591575604901205