sac

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Related to amniotic sac: placenta, amniotic fluid, yolk sac

Sac:

see Sac and FoxSac and Fox,
closely related Native Americans of the Algonquian branch of the Algonquian-Wakashan linguistic stock (see Native American languages). Sac and Fox culture was of the Eastern Woodlands area with some Plains-area traits (see under Natives, North American).
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sac

[sak]
(biology)
A soft-walled cavity within a plant or animal, often containing a special fluid and usually having a narrow opening or none at all.
(mapping)
Indentation in the contour lines of equal depth showing submarine relief.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

sac

a pouch, bag, or pouchlike part in an animal or plant
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

SAC

1. An early system on the Datatron 200 series.

[Listed in CACM 2(5):16 (May 1959)].
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
References in periodicals archive ?
Baby Katie Glasshouse, who was born inside her amniotic sac Helen Smith
Baggieri added that while such special cases maybe observed in every 80,000 or 100,000 natural births, they almost never happen during C-section births because scalpels used during the surgery, typically tends to puncture the amniotic sac. However, en-caul births never pose any threats to the lives of the baby in question or the mother.
* If you notice that 30 minutes after the amniotic sac appears, there's little less than a peek of feet, check for signs of distress with the help of an 08 sleeve and lube.
Dr Ross Welch, a former president of the International Foetal Medicine and Surgery Society, said: "Operating on babies who are supposed to be immersed in water (in the amniotic sac) is a difficult process and that is why it is so important to have this carefully choreographed team approach."
"In November, when my wife was five months pregnant, she got a rupture in the amniotic sac," said her heartbroken husband, who asked to remain anonymous.
The entire amniotic sac containing the fetus protruded through uterine isthmic breach and about 800 mL hemoperitoneum was detected and drained.
"One of the biggest risks in performing surgery on fetuses is not the surgical procedure itself, but the insertion of a fetal scope through the amniotic sac, which is very fragile," Diederik Balkenende, Ph.D., said.
The cells spontaneously developed some of the same structural and molecular features seen in a natural amniotic sac, which is an asymmetric, hollow ball-like structure containing cells that will give rise to a part of the placenta as well as the embryo itself.
Once a mammalian egg is fertilized and begins dividing, the new cells segregate into two groups: those that will develop into the embryo and those that will develop into supportive tissues like the placenta and amniotic sac.
Once a mammalian egg is fertilized and begins dividing, the new cells segregate into two groups: those that will develop into the embryo and those that will develop into supportive tissues like the placenta and amniotic sac. Because this division of labor happens relatively early, researchers often can't maintain cultured cell lines stably until cells have already passed the point where they could still become either type.
Another publication by Gupta and coauthors presented a report about prolapse of amniotic sac through a vesicouterine fistula at 22 weeks of pregnancy [12].