| amniota | <zoology> That group of vertebrates which develops in its embryonic life the envelope called the amnion. It comprises the reptiles, the birds, and the mammals. Origin: NL. See Amnion. Source: Websters Dictionary (01 Mar 1998) |
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| amniotic | <anatomy> Of or pertaining to the amnion; characterised by an amnion; as, the amniotic fluid; the amniotic sac. Amniotic acid. <chemistry> See Allantoin. Origin: Cf. F. Amniotique. Source: Websters Dictionary (01 Mar 1998) |
| amniotic adhesions | The strands of amniotic tissue adherent to the embryo or foetus; they may cause constriction of embryonic limbs. See: congenital amputation. Synonym: amniotic adhesions, annular band, constriction ring, Simonart's bands, Simonart's ligaments, Simonart's threads, Streeter's bands. (05 Mar 2000) |
| amniotic amputation | Amputation produced in utero; attributed to the pressure of constricting bands (amniotic); autosomal recessive inheritance. Synonym: amniotic amputation, amputation, birth amputation, intrauterine amputation, spontaneous amputation. (05 Mar 2000) |
| amniotic band syndrome | <syndrome> A disorder present in the newborn infant in which constriction rings or bands, causing soft tissue depressions, encircle digits, extremities, or limbs and sometimes the neck, thorax, or abdomen. They may be associated with intrauterine amputations. (12 Dec 1998) |
| amniotic bands | The strands of amniotic tissue adherent to the embryo or foetus; they may cause constriction of embryonic limbs. See: congenital amputation. Synonym: amniotic adhesions, annular band, constriction ring, Simonart's bands, Simonart's ligaments, Simonart's threads, Streeter's bands. (05 Mar 2000) |
| amniotic cavity | The fluid-filled cavity inside the amnion which contains the developing embryo. (05 Mar 2000) |
| amniotic corpuscle | One of a number of small ovoid or rounded, sometimes laminated, bodies resembling a grain of starch and found in nervous tissue, in the prostate, and in pulmonary alveoli; of little pathological significance, and apparently derived from degenerated cells or proteinaceous secretions. Synonym: amniotic corpuscle, amylaceous corpuscle, amyloid corpuscle, colloid corpuscle. (05 Mar 2000) |
| amniotic duct | The transitory opening between the seroamniotic folds in birds just before they fuse to form the seroamniotic raphe. (05 Mar 2000) |
| amniotic ectoderm | Inner layer of the amnion continuous with body ectoderm. (05 Mar 2000) |
| amniotic fluid | <anatomy, obstetrics> The fluid that surrounds the developing foetus within the amniotic sac. This environment cushions the baby from injury and plays an important role in foetal development. (05 Feb 1998) |
| amniotic fluid embolism | Obstruction and constriction of pulmonary blood vessels by amniotic fluid entering the maternal circulation, causing obstetric shock. See: amniotic fluid syndrome. (05 Mar 2000) |
| amniotic fluid syndrome | <syndrome> Pulmonary embolic phenomena thought to be due to infusion of amniotic fluid containing epithelial squames into maternal blood vessels; shock ensues and sudden death may occur. (05 Mar 2000) |
| amniotic fold | A fold of amniotic membrane enclosing the yolk stalk and extending from the point of insertion of the umbilical cord to the yolk sac; in reptiles and birds it is the reflected edge of the amnion where it folds over to cover the embryo during early development. Synonym: Schultze's fold. (05 Mar 2000) |
| amniotic raphe | The line of fusion of the amniotic folds over the embryo in reptiles, birds, and certain mammals. (05 Mar 2000) |
| amniotic cavity |
the fluid-filled cavity that surrounds the developing embryo
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| amnion |
thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)
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| amniote |
any member of the Amniota
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| Amniota |
higher vertebrates (reptiles, birds and mammals) possessing an amnion during development
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| amniotic fluid |
the serous fluid in which the embryo is suspended inside the amnion; "before a woman gives birth her waters break"
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| AMN | thin innermost membranous sac enclosing the developing embryo in higher vertebrates (Amniota: reptiles |
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