2 edition of Placental vasculature and circulation found in the catalog.
Placental vasculature and circulation
Elizabeth Mapelsden Ramsey
|Statement||by Elizabeth M. Ramsey and Martin W. Donner.|
|Contributions||Donner, Martin W.,|
|LC Classifications||QP281 R36|
|The Physical Object|
|Pagination||101 p. :|
|Number of Pages||101|
Abstract. Mammalian embryos have an intimate relationship with their mothers, particularly with the placental vasculature from which embryos obtain nutrients essential for growth. It is an interesting vascular bed because maternal vessel number and diameter change dramatically during gestation and, in rodents and primates, Cited by: In mice, reduced uteroplacental blood supply results in altered placental structure, vasculature, and amino acid transport that may underlie the effects on fetal growth [92,93]. Women that have undergone uterine artery embolization can maintain a pregnancy, suggesting that compensatory remodeling can occur in uterine vasculature .
Title:Uteroplacental Circulation and Fetal Vascular Function and Development VOLUME: 11 ISSUE: 5 Author(s):Kent L. Thornburg and Samantha Louey Affiliation:Heart Research Center, Oregon Health & Science University, SW Bond Ave, CH15H, Portland, OR , USA. Keywords:Blood flow regulation, vasculature, placental insufficiency, compromise, by: Placental thrombotic infarcts may be maternal or fetal. However, the frequent finding of thrombosis on the maternal side, in conjunction with the fact that heparin can prevent fetal loss but does not cross the placental circulation, argues that thrombosis on the maternal side of the placental circulation is of primary importance.
The placenta is an organ that connects the developing fetus to the uterine wall, thereby allowing nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. Proper vascular development in the placenta is fundamental to ensuring a healthy fetus and successful pregnancy. This book provides an up-to-date summary and synthesis of knowledge regarding placental vascular 3/5(1). Placenta Increta - occurs when the placenta attaches deep into the uterine wall and penetrates into the uterine muscle, but does not penetrate the uterine serosa. Placenta increta accounts for approximately % of all cases. Placenta Percreta - placental villi .
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Placental Vasculature and Circulation on *FREE* shipping on qualifying offers. Placental Vasculature and CirculationFormat: Hardcover. The placenta is a unique vascular organ that receives blood supplies from both the maternal and the fetal systems and thus has two separate circulatory systems for blood: (1) the maternal-placental (uteroplacental) blood circulation, and (2) the fetal-placental (fetoplacental) blood by: 9.
The trophoblast, a cell Placental vasculature and circulation book of the placenta, is also outlined in this book, as well as its function in the placenta during pregnancy and its role in developmental processes and gynecological diseases. In addition, pregnancy-specific glycoproteins (PSGs) are secreted proteins which are produced by the rodent and primate placenta, and play a.
Placental vasculature and circulation: anatomy, physiology, radiology, clinical aspects: atlas and textbook. Maternal blood in the lacunae, propelled at first only by capillary pressure, moves sluggishly. With deeper penetration of the trophoblast endometrial spiral arteries are tapped.
Blood from them enters the lacunae under higher pressure and thus the first stage of placental circulation is by: 6. The placenta is an organ that connects the developing fetus to the uterine wall, thereby allowing nutrient uptake, waste elimination, and gas exchange via the mother’s blood supply.
Proper vascular development in the placenta is fundamental to ensuring a healthy fetus and successful by: This historic paper by Ramsey (17 February - 2 July ) describes development of the placental circulation.
She published extensively on placental and embryonic development and this paper uses both human and monkey placentas from the Carnegie Collection. The feto-placental blood circulation within the placenta vasculature is.
responsible for producing a healthy baby by delivering the required. oxygen and nutrients. It originates at the insertion of the two umbilical. arteries and terminates at the umbilical vein. Placental abruption (abruptio placentae), complete or partial, is the premature separation of the placenta from the decidua basalis, which is the number one cause of vaginal bleeding late in pregnancy.
Unlike placenta previa, uterine bleeding is painful with uterine contractions and fetal distress is usually present. The placenta accepts the blood without oxygen from the fetus through blood vessels that leave the fetus through the umbilical cord (umbilical arteries, there are two of them).
When blood goes through the placenta it picks up oxygen. The oxygen rich blood then returns to the fetus via the third vessel in the umbilical cord (umbilical vein).
The. Uterine and placental vasculature Lecture - Placenta Development From Embryology Introduction This lecture is an introduction to the development and functions of the placenta. The placenta (Greek, plakuos = ﬂat cake) named on the basis of this organs appearance.
The placenta a mateno-fetalFile Size: 1MB. Abstract: Although blood flow in the placental vasculature is governed by the same physiological forces of shear, pressure and resistance as in other organs, it is also uniquely specialized on the maternal and fetal sides.
At the materno-fetal interface, the independent uteroplacental and umbilicoplacental circulations must coordinate sufficiently Cited by: The placenta is a temporary organ that connects the developing fetus via the umbilical cord to the uterine wall to allow nutrient uptake, thermo-regulation, waste elimination, and gas exchange via the mother's blood supply; to fight against internal infection; and to produce hormones which support pregnancy.
Placentas are a defining characteristic of placental mammals, but are also found in MeSH: D Intense basic research concerned with placental vascularization and blood flow has been performed for the past 30 years, beginning with the classical morphological descriptions of the placental vessels by Boe () and Arts (), as well as with the radioangiographic studies of maternal placental circulation in the human by Borell () and.
(Figure 2) and the precursor of fetal circulation in the placenta. At the end of the early developing stage, a placental villous is formed from the inner to the.
outer site, by a fetal capillary endothelium, a loose connective tissue surrounding the fetal villous vessels, a cytotrophoblastic villous layer and a syncytiotrophoblastic villous layer.
The optimal function of the placenta and thus fetal well being largely depends upon the integrity of both the fetal and maternal circulations of the placenta. Intense basic research concerned with placental vascularization and blood flow has been performed for the past 30 years, beginning with the.
The trophoblast is highly metabolically active and accounts for ~40% of oxygen consumption by the feto- placental unit. This feature is not available right now. Please try again later. The fetal circulation is arranged to allow oxygen-rich blood from the placenta to initially flow to the liver, where it divides to either the portal sinus or ductus venosus and then enters the right atrium via the inferior vena cava.
The bulk of this blood passes through the foramen ovale, into the left atrium. Moreover, the placental vasculature is mainly regulated by circulating, locally-produced hormones and vasoactive compounds such as prostaglandins, endothelium-derived hyperpolarizing factor (EDHF) and NO since unlike most other vascular beds, the feto-placental circulation is not innervated.
Given that the binding of S1P to its receptors on Cited by: 2. Placental Vascularization and Blood Flow by R. K. Miller,available at Book Depository with free delivery worldwide.
It is clear from clinical and anatomical studies of the placenta and its vasculature that its efficiency is determined by several interacting factors.
These include the structure of the vasculature from the large vessels of the chorionic plate, through to the small capillary vessels that contribute to Cited by: Normal placental circulation and fetal vasculature are important to maintain normal healthy pregnancy, any abnoramlities in placental circulation may lead to many complication including pregnancy.