The amniotic sac, also called the bag of waters or the membranes, is the sac in which the embryo and later fetus develops in amniotes. It is a thin but...

The amniotic fluid is the protective liquid contained by the amniotic sac of a gravid amniote. This fluid serves as a cushion for the growing fetus, but...

to a residual external yolk sac. Diagram showing earliest observed stage of human ovum. 1 - Amniotic cavity 2 - Yolk-sac 3 - Chorion Diagram illustrating...

describing an excess of amniotic fluid in the amniotic sac. It is seen in about 1% of pregnancies. It is typically diagnosed when the amniotic fluid index (AFI)...

when they first form. It fills with amniotic fluid, which causes the amnion to expand and become the amniotic sac that provides a protective environment...

characterized by a deficiency of amniotic fluid, the fluid that surrounds the fetus in the abdomen, in the amniotic sac. The limiting case is anhydramnios...

the amniotic sac expands and occupy the majority of the volume of the gestational, eventually reducing the extraembryonic coelom (the gestational sac or...

between two fluid-filled cavities at either end: the primitive yolk sac and the amniotic sac. The epiblast is adjacent to the trophoblast and made of columnar...

or abnormal vaginal excretion. Administration of antibiotics if the amniotic sac bursts prematurely can prevent chorioamnionitis occurrence. The signs...

amniorrhexis is a term used during pregnancy to describe a rupture of the amniotic sac. Normally, it occurs spontaneously at full term either during or at the...

the function otherwise provided by the placenta, an amniotic tank functioning as the amniotic sac, as well as an umbilical cord. A woman may still supply...

it is fully dilated at 10 cm diameter. At some time, the amniotic sac bursts and the amniotic fluid escapes (also known as rupture of membranes or breaking...

Monoamniotic twins are identical or semi-identical twins that share the same amniotic sac within their mother's uterus. Monoamniotic twins are always monochorionic...

is born inside the entire amniotic sac (instead of just a portion of it). The sac balloons out at birth, with the amniotic fluid and child remaining inside...

MPEG Surround SAC (gene) Amniotic sac Anal sac or anal gland Bursa sac or bursa Chorion Dural sac, a structure of spinal cord Egg sac, the reproductive...

the sac with polyhydramnios in order to relieve amniotic fluid pressures, a process that may improving fetal circulation and outcomes. Amniotic fluid...

are usually extracted from the amniotic sac by amniocentesis which occurs without harming the embryos. The use of amniotic fluid stem cells is therefore...

previously known as premature rupture of membranes, is breakage of the amniotic sac before the onset of labour. Women usually experience a painless gush...

commencing constriction of the yolk-sac Opened uterus with cat fetus in midgestation: 1 umbilicus, 2 amniotic sac (chorion and amnion), 3 allantois Jones...

chorion, allantois, and yolk sac. The amnion and the chorion are the chorioamniotic membranes that make up the amniotic sac which surrounds and protects...

examination, the leading part of the fetus becomes identifiable after the amniotic sac has been broken and the head is descending in the pelvis. Many factors...

irregular contractions, bleeding, and in 1 out of every 10 women an amniotic sac rupture, which can lead to a formal induction within 24 hours of the...

the chorionicity (the number of placentae) and amniocity (the number of sacs) of the pregnancy. Dichorionic twins either never divided (i.e.: were dizygotic)...

developing fetus and mother. The chorion and the amnion together form the amniotic sac. In humans it is formed by extraembryonic mesoderm and the two layers...

into the middle of the placental mass and is completely encased by the amniotic sac. The vessels are hence normally protected by Wharton's jelly, which prevents...

the fetus is protected from sexual thrusting and unwanted semen by the amniotic fluid in the womb and by the cervical mucus plug in the woman's cervix...

having the baby aspirate the contents of the amniotic sac at the moment of birth. Most often, the amniotic sac will break of its own accord, most often by...

fetuses such that the amniotic fluid of both twins mixes, under the assumption that pressure is different in either amniotic sac and that its equilibration...

where a hook is inserted into the amniotic membranes to puncture, causing the amniotic fluid to drain from the amniotic sac that holds the fetus. The reason...

by in vitro fertilization, "it frequently happens that more than one amniotic sac can be seen in early pregnancy, whereas a few weeks later there is only...