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Topic: Amnionic sac

	UNSW Embryology- Beginnings, Growth and Development - Placenta-fetal membranes
		Note: amniotic sac (relatively tense), yolk sac (less tense), head fold region, region of heart tube ventral to the head fold, and the somites.
		Gastrointestinal tract - approximate regions of the midgut ("roof" region of the yolk sac) and hindgut (Note: The foregut appears to be separated from the midgut by a dense column of tissue, but this is a section through one of the umbilical veins crossing to the heart obliquely from the side of the embryo).
		The broad elevation in the ectoderm is the expansion dome (primitive single brain bulge) and the cluster of cells at the caudal end of the embryonic disc is the primitive node region.
	embryology.med.unsw.edu.au /Medicine/BGDlab8.htm (913 words)

	Circulation is established in a stepwise pattern in the mammalian embryo -- McGrath et al. 101 (5): 1669 -- Blood
		In this figure, the yolk sac was photographed with the embryo proper inside, except for panels D and I, where the embryo proper was dissected free of amnion and yolk sac.
		adherence of circulating progenitors to yolk sac endothelium.
		Fold enrichment was calculated as the ratio of progenitors in yolk sac to embryo proper divided by the ratio of erythroblasts in the yolk sac to embryo proper.
	www.bloodjournal.org /cgi/content/full/101/5/1669 (6641 words)

	Comparative Placentation
		The amnionic surface epithelium of the cord was squamous with keratinization.
		Indeed, the amnion does not contact the chorionic sac at term; it is surrounded by the allantoic sac.
		He observed a small sac near the insertion of the cord in all these species with a persisting omphalomesenteric vasculature and a small patent duct.
	medicine.ucsd.edu /cpa/tapir.htm (1636 words)

	Catholic and Pro-Life
		Within the sac was a tiny human male, swimming extremely vigorously in the amnionic fluid, while attached to the wall by the umbilical cord.
		The yolk sac, shown on the left, produces blood cells during the early weeks of life.
		The tiny person is protected by the amnionic sac, filled with fluid.
	groups.msn.com /CatholicandProLife/fetaldevelopment1.msnw (971 words)

	Stock Illustration of Schematic showing developing fetus in amnionic sac with placental attachment. - Search Clipart ...
		Stock Illustration of Schematic showing developing fetus in amnionic sac with placental attachment.
		Schematic showing developing fetus in amnionic sac with placental attachment.
		amnionic, anatomy, attachment, body, bonus, child, developing, development, female, fetal, fetus, lifeart, ob, pediatrics, physiology, placenta, placental, reproduction, sac, schematic, illustration, illustrations, clip art, clipart, picture, pictures, graphic, graphics, drawing, drawings, artwork, pdb01005, royalty free
	www.fotosearch.com /LIF145/pdb01005 (271 words)

	C:\DOCS\MSS\GUSTIBUS.HTM (Site not responding. Last check: 2007-10-04)
		Morphologically, placentas may be disc- shaped (discoid, as in higher primates and rodents); a band around the amnionic sac (zonary, as in most carnivores); a group of from several to over a hundred islands of tissue (cotyledonary or multiplex, as in most ruminants); or diffuse (diffuse or microcotyledonary, as in some nonruminant ungulates).
		When these influences were eliminated by examining the effect of placenta and amnionic fluid on the pups' skin on the induction rate of maternal responsiveness in virgin rats (sensitization rate [57]), a significant facilitation of the onset of maternal behavior was observed [40].
		However, several factors were varied over the series of studies, making it difficult to separate out effects of placenta and amnionic fluid, the duration of lactation prior to testing, and the mode of delivery of the foster pups and the mother's own litter.
	cogprints.org /757/00/gustibus.htm (8674 words)

	Abortion (Site not responding. Last check: 2007-10-04)
		When the sac is opened, fluid is commonly found surrounding a small macerated fetus, or alternatively there may be no visible fetus in the sac, the so-called blighted ovum.
		Amnionic fluid may be absorbed when the fetus becomes compressed upon itself and desiccated to form a fetus compressus.
		Dickey and colleagues (1992) reported that infertility patients over 35 had a higher incidence of small amnionic sac syndrome and an increased incidence of euploidic abortion.
	www.laramededucation.com /abortion.html (4977 words)

	Christian Discussion Forums - A matter of salvation? (Site not responding. Last check: 2007-10-04)
		As far as the water Jesus mentions, this refers to the amnionic sac filled with a fluid that every child lives in prior to birth.
		It was to this breaking of the amnionic sac that Jesus was referring to; not, as some would have us to believe, physical baptism.
		Since the amnionic fluid is basically a colorless fluid that is pretty clear, it looks a lot like water, hence the people would talk about the water breaking or water appearing or whatever terminology they would use to indicate that the birth of the infant was imminent.
	www.andyholloway.com /vbulletin/showthread.php?t=720&page=2 (3705 words)

	Excerpts from Linnea's Letters
		She’ll have to go somewhere else.” (Eda’s sentiments, exactly.) However, the patient’s sister explained that they had come from across the river and up the far side of the island by canoa, and had no other way to get anywhere.
		She reported that the patient’s “bag of waters,” the amnionic sac in which the baby floats prior to birth, which usually breaks open at or near the time of delivery, had broken yesterday afternoon.
		She was doing absolutely nothing, and by now over 24 hours had gone by since the rupture of the membranes (the amnionic sac), and each hour that passed increased the chances of infection for her and/or her infant.
	www.amazonmedical.org /excerpts.html (2681 words)

	[No title] (Site not responding. Last check: 2007-10-04)
		This remarkable photograph of a tiny baby in his unruptured amniotic sac was taken after surgery for an ectopic pregnancy in 1972.
		Once in the uterus, the developing embryo, called a blastocyst, searches for a nice place to implant, where it actually burrows beneath the surface of the uterus.
		The unborn child, called a fetus at this stage, is about half an inch long.
	home.att.net /~morningstarpregnancyservices/TheFirstTrimester.html (687 words)

	rb2
		The fetus is obviously still inside the amnionic sac.
		The chorio-allantois is in the correct orientation as it would exist during pregnancy in a mare’s uterus.
		You can also see the thinner white, amnionic membrane still attached to the vascular and membranous structures as they course inside the chorio-allantois where they connect to its inner surface.
	www.southernheartranch.com /rb2.html (269 words)

	This page is currently under construction
		A needle is inserted into the amnionic fluid sac through the mother's abdomen.
		The injection of prostaglandins, which are hormones that assist in the birthing process, into the amnionic sac induces violent labor and the premature birth of a child to young to survive.
		Many times, salt or other toxins are injected first to assure the baby will be dead upon delivery.
	www.gtalife.org /abortionprocedures.htm (541 words)

	From Trophoblast to Human Placenta
		chorionic plate the connective tissue that separates the amnionic fluid from the maternal blood on the fetal surface of the placenta.
		The chorionic villi farthest away from the maternal blood supply are slowly pushed into the uterine cavity by the expanding amnionic sac which surrounds the embryo.
		It is not surprising, therefore, that the most common organisms cultured from amnionic fluid are commonly found in the vagina.
	info.med.yale.edu /obgyn/kliman/placenta/articles/EOR_Placenta/Trophtoplacenta.html (5300 words)

	Pregnancy Resource Center - First Trimester
		The heart begins development.The yolk sac, produces blood cells during the early weeks of life.
		The unborn child, called a fetus at this stage, is about half an inch long and now resembles a human.
		The arms and legs have lengthened, and fingers can be seen and bones begin to form.
	www.preghelp.com /trimester1.html (585 words)

	MotheringDotCommune Forums - OK, sono techs, midwives, twin moms --
		They each had their own placenta, chorion (the outer part of the sac) and amnion (the inner part of the sac).
		Anyway...off on a ramble sorry, was fascinated when I learned I was having tiwns (no fertility and no history of twins on any side of the family!) My OB had given me this little "chart" to help me when I was looking into how twins form.
		they were in seperate sacs, had one fused placenta but look an awful lot alike.
	www.mothering.com /discussions/printthread.php?t=148451 (1570 words)

	Ridgebackdogs.com-Puppy Journal
		Jazzy did everything right and licked at the puppy as she came out head first to break the amnionic sac.
		Sandee exclaimed, “Oh is it small” as she went to work to clean and dry the puppy and tie off the umbilical cord.
		She just slid on out with no real effort after big blue…she also came out with the sac broken and the umbilical detached, but she dove into life headfirst, just like her oldest sister.
	www.ridgebackdogs.com /puppies.htm (4725 words)

	Animal Care Hospital - Fayette County Veterinarians, Dental, Dogs, Cats, Horses, Livestock
		If the amnionic sac is red or discolored (should be white), assist foal in rupturing sac immediately.
		Assist in removing amnionic fluid from nostrils and mouth with a clean, dry cloth.
		If the foal is not presented into the birth canal with the front feet (with soles down) and nose first.
	www.1animalcare.com /Horses_Care.htm (770 words)

	What is an Abortion?
		The doctor inserts a long needle through the mother's abdomen and injects a saline solution into the sac of amnionic fluid surrounding the baby.
		The baby is poisoned by swallowing the salt and his skin is completely burned away.
		PROSTAGLANDIN ABORTION; Prostaglandin is a chemical hormone which induces violent labor and premature birth when injected into the amnionic sac.
	www.prochoice.com /pc3.htm (551 words)

	thepirateknight.net » Blog Archive » Get Well Mary Kate
		Monozygotic twins (one fertilized egg that splits in two) share the same placenta, chorionic sac, but don’t necessarily share the same amnionic sac.
		This is probably where the idea of Ashley and Mary Kate being fraternal (dizygotic) twins came from.
		Mary Kate and Ashley probably did not share an amnionic sac, therefore causing their doctor to come to an incorrect conclusion about whether or not they were fraternal or identical.
	www.thepirateknight.net /?p=42 (696 words)

	[No title] (Site not responding. Last check: 2007-10-04)
		20-25% Saline or 30-40% Urea solutions are injected into the amnionic sac (the bag of fluid).
		The drugs in this group can be used vaginally, as a shot, into the amnionic sac (the bag of fluid), and orally (by mouth).
		The brand name in the U.S. is Cytotec and it is used to induce labor and to treat stomach ulcers.
	www.g-h-o.co.uk /id42_m.htm (1058 words)

	Multiple Pregnancy and Birth Glossary - Twins
		This test may help to determine birth defects such as spina bifida and downs syndrome
		done @ 16-20 weeks this procedure is guided by an ultrasound image that locates each fetus and placenta before a think hollow needle is inserted through the abdomen and uterus, and amniotic fluid is withdrawn from the sac.
		the theory that an early observation of twins but one of the gestational sacs failed to develop
	www.bellaonline.com /ArticlesP/art3000.asp (385 words)

	Fetus of the Placenta
		•This is an intact amniotic sac containing a fetus.
		• An empty sac or disorganized embryonic tissues (identified by microscopy) may be secondary to early fetal demise.
		• Alternatively the fetus may be delivered within the amnionic sac followed by the placenta.
	pathweb.uchc.edu /eatlas/GYN/679.HTM (343 words)

	lifeissues.net \| Framing the Debates on Human Cloning and Human Embryonic Stem Cells: Pluripotent vs. TOTIPOTENT
		Subsequently, two embryos, each in its own aminiotic sac, develop within the same chorionic sac and share a common placenta.
		Late division of early embryonic cells, such as division of the embryonic disc during the second week, results in MZ twins that are in one amnionic sac and one chorionic sac.
		If the embryonic disc does not divide completely, or adjacent embryonic discs fuse, various types of conjoined MZ twins may form.
	www.lifeissues.net /writers/irv/irv_100debatecloning2.html (3461 words)

	Week 5
		The baby's bowels are filled with meconium, a fl, tarry substance which will become baby’s first bowel movement.
		The fluid in the amnionic sac has increased from one drop to one liter.
		The placenta has grown to about seven inches in diameter and weights about one to two pounds.
	www.scismbunch.us /weeks.htm (1646 words)

	TermPapers-TermPapers.com - Abortion
		The other method is hysterectomy; Similar to the Cesarean section, the hysterectomy abortion is a surgical procedure whereby the baby is removed from the mother's womb and allowed to die by neglect or killed by a direct act.
		The last method is prostaglandin abortion; Prostaglandin is a chemical hormone that induces violent labor and premature birth when injected into the amnionic sac.
		In 1973 the Supreme Court said it was ok to kill unborn babies.
	www.termpapers-termpapers.com /dbs/e3/rfh16.shtml (2034 words)

	Apnea of Prematurity
		Infection was the suspected cause of the preterm labor, so an amniocentesis was performed.
		This involves inserting a needle into the amnionic sac and removing a sample for analysis.
		Logan's mother was placed on amoxicillin and erythromycin antibiotics for five days to get rid of the infection.
	learn.sdstate.edu /craigg/Bailly.html (4012 words)

	Spread of Fetal Membrane Infection to Mother - Medical Illustration
		Depicts spread of infection from the fetal membranes into the mother's bloodstream.
		The first image shows a mid-sagittal (cut-away) view of the pregnant mother with labels for the muscular wall of the uterus, placenta, umbilical cord, amnionic sac, amnionic fluid, infection of the fetal membranes, vena cava, iliac vein, hypogastric vein and uterine vein.
		The second illustration shows the spread of infection to the mother via the placenta and uterine veins.
	hon.nucleusinc.com /generateexhibit.php?ID=921 (259 words)

	Umbilical Hernia - TheHorse.com
		The umbilical cord contains a vein, two arteries, and the urachus (a tube-like structure that connects to the foal's bladder and empties the bladder into the amnionic sac).
		The arteries and vein bring blood to or from the placenta.
		On the other hand, there always is the possibility of problems whenever intestinal contents are in a hernial sac.
	www.thehorse.com /viewarticle.aspx?ID=482 (1300 words)

	UNSW Embryology- Week 2
		innermost cell layer thin and line Primary Yolk sac
		line Primary Yolk sac to form Yolk Sac
		canal opens between amnion and yolk sac- neurenteric canal
	embryology.med.unsw.edu.au /Notes/week2.htm (444 words)

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