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Categories: Developmental biology Embryology Greek loanwords Cleanup from June 2007 All pages needing cleanup Articles to be expanded since April 2008 All articles to be expanded |
Summary Of: PlacentaThe placenta develops from the same sperm and egg cells that form the fetus... the placenta averages 22 cm... Vessels branch out over the surface of the placenta and further divide to form a network covered by a thin layer of cells... In humans the placenta usually has a disc shape but different mammalian species have widely varying shapes... The placenta begins to develop upon implantation of the... The placenta grows throughout pregnancy... Development of the maternal blood supply to the placenta is suggested to be complete by the end of the first... This increases maternal blood flow to the placenta and also decreases resistance so that shear stress is reduced... The perfusion of the intervillous spaces of the placenta with maternal blood allows the transfer of nutrients and oxygen from the mother to the... the placenta also has metabolic and... However after about 2 months the placenta takes on the role of producing progesterone and therefore beta... its placenta begins a physiological separation for spontaneous expulsion afterwards... Premature cord traction can pull the placenta before it has naturally detached from the uterine wall... Risks of retained placenta include hemorrhage and infection... If the placenta fails to deliver in 30 minutes in a hospital environment... and placenta intact until the cord dries and detaches the next day... Human placenta shown a few minutes after birth... A different placenta displays side that connects to the uterine wall... Human placenta shown a few minutes after birth... A different placenta displays side that connects to the... The placenta often plays an important role in various human... the placenta is most often... the placenta for various reasons... traditionally bury the placenta from a newborn child to emphasize the relationship between humans and the earth... bury the placenta and umbilical cord at a specially... burial of the placenta is believed to protect and ensure the health of the baby and the mother... bury the placenta in a secret place so that the mother... The placenta is believed by some communities to have power over the lives of the baby or... the proper disposal of the placenta and umbilical cord is believed to promote devoutness in the child later in life... interaction with a disposed placenta is thought to influence the parents... believed that the placenta was imbued with magical powers... the placenta of the pharaoh was placed on a pole and carried into battle... Several cultures believe the placenta to be or have been alive... think of the placenta as a friend of the baby... consider the placenta the deceased twin of the baby... believe that the placenta is a part of the baby... the placenta is thought to be healthy and is used in medicine and various health products... Picture of freshly delivered placenta and umbillical cord wrapped around Kelly clamps... Placenta Rituals and Folklore from around the World...Encyclodia Page On: Placenta |
