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Related to atresic: atresia, antiemetic, atretic


Relating to atresia.
Synonym(s): atresic, imperforate
Farlex Partner Medical Dictionary © Farlex 2012


adjective Pertaining or referring to atresia, see there.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


(a-tre'zha) [ ¹an- + Gr. tresis, a perforation]
Congenital absence or closure of a normal body opening or tubular structure. atresicatretic (a-tre'zik, 'sik) (a-tret'ik), adjective

anal atresia

Imperforate anus.

aortic atresia

Congenital closure of the aortic valvular opening into the aorta.

biliary atresia

Closure or absence of some or all of the major bile ducts.

choanal atresia

A congenital occlusion of the passage between the nose and pharynx by a bony or membranous structure.

congenital aural atresia

Failure of the external ear canal to develop in utero. When this condition affects both ears, the child may suffer permanent hearing loss and have difficulty speaking and acquiring language skills. Unilateral cases require no specific therapy.

duodenal atresia

Congenital closure of a portion of the duodenum.

esophageal atresia

Congenital failure of the esophagus to develop.

follicular atresia

Normal death of the ovarian follicle following failure of the ovum to be fertilized.

intestinal atresia

Congenital closure of any part of the intestine.

mitral atresia

Congenital closure of the mitral valve opening between the left atrium and ventricle.

prepyloric atresia

Congenital closure of the pyloric end of the stomach.

pulmonary atresia

Congenital closure of the pulmonary valve between the right ventricle and the pulmonary artery.

urethral atresia

Absence or closure of the urethral orifice or canal.

vaginal atresia

Congenital closure or absence of the vagina.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
In most cases, the atresic cytoplasm stained more intensely, becoming darker compared with that of healthy oocytes.
Characteristics of atresia were observed in early and late vitellogenic oocytes (atresic immature oocytes), and in mature oocytes (atresic mature oocytes), beginning in April and throughout gametogenesis and postspawning resorption (Fig.
(1) Atresic volume fraction (AVF): the number of grid points occupied by AO divided by the total number of grid points occupied by all oocyte types.
(4) Minimum atresic impact (MAI): the minimum impact of atresia on the oocyte population, expressed as
The MAI was based on three assumptions: (1) MVF (composed of healthy, mature oocytes) represented the oocyte volume fraction with a high probability of being spawned as healthy; (2) AVF represented the oocyte volume fraction with no probability of being spawned as healthy oocytes; the fates of MVF and AVF were therefore known; (3) The fate of IVF was unknown as it could either remain healthy or become atresic. This index, therefore, represents the minimum oocyte volume fraction known to be atresic, compared with the total oocyte volume fraction whose fate is known.
3): active development, mostly vitellogenic oocytes (516-2,743 [micro][m.sup.2]); ripeness, comprising postvitellogenic oocytes (1,073 2,930 [micro][m.sup.2]); partial spawning with residual oocytes (145 2,939 [micro][m.sup.2]); and spent stage, mostly atresic oocytes (331 2,001 [micro][m.sup.2]).
atresic oocytes with nuclear and cytoplasmic membrane breakdown and vacuolation of the ooplasm and 2.
Atresic oocytes were less frequent than in phase II, as indicative of a probable mechanism of resorption.