Also found in: Thesaurus, Medical, Acronyms, Encyclopedia.
Related to antral: antral gastritis, Antral follicle


n. pl. an·tra (-trə)
1. A cavity or chamber, especially one in a bone.
2. Either of the sinuses in the bones of the upper jaw, opening into the nasal cavity.

[Late Latin, cavity in the body, from Latin, cave, from Greek antron.]

an′tral adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Mentioned in ?
References in periodicals archive ?
From the previous history, we mention an antral gastric cancer for which there was performed 2/3 gastrectomy with gastroduodenal anastomosis and a normochromic anemia.
Con respecto a las posibles causas de impaccion en los animales del presente estudio, se puede presumir que pudo deberse al escaso aporte de agua antes del sacrificio, asi como procesos inflamatorios en el antro pilorico que podrian alterar la sistole antral y con ello la disminucion en el vaciamiento gastrico.
Taking into account the known interrelations between the morphological status and functional activity of gastric corpus and antral mucosa and the secretion of, respectively, pepsinogen-1 and postprandial gastrin-17, we carried out a prospective study with the aim detect the optimal boundaries serological markers mild, moderate and severe atrophy of the gastric mucosa.
The most common complication of such a closure is wound dehiscence, and an ideal flap for management of oro antral communication might still have its advantag- es and shortcomings.
Traditionally the antral follicle count (AFC) measured by ultrasound was used to predict ovarian reserve.
Key words: Antral follicular count Super-stimulation Repeatability Buffalo.
Almost all the studies conducted on the effects of ND on the histomorphology of the ovary and uterine tissues, have unanimously reported a significant decrease in the antral follicle count and changes in the uterine tissue morphology.
In particular, we found that the number of caspase-3-positive apoptotic cells was significantly increased in granulosa cells of the antral follicles and in luteal cells of the corpus luteum of ovaries from rats exposed to BPA, suggesting that long-term BPA exposure during adulthood causes augmentation of follicular atresia and luteal regression in the ovary.
Results related to oocyte diameter, antral follicles, corpus luteum and the germinal epithelium Average oocyte diameter decreased significantly in diabetic rats as compared to diabetic + extract of Artemisia 300mg/kg show.
Three biopsy samples were taken from the stomach: antral mucosa, mucosa of the corpus and a sample from a submucosal lesion of the antrum that on the endoscopic examination gave the impression of adipose tissue.
The ovary follicles observed in different stages of maturation (pre-antral: primordial, primary and secondary; antral: tertiary) were classified as active or atretic, according to Schillo (2009).
The ovary of the initial control exhibited normal histomorphology and consisted of primordial (type 2), primary (type 3a, 3b), pre-antral (type 4, 5a, 5b) and antral (type 6) follicles whereas, antral (type 7) and pre-ovulatory (type 8) follicles were not developed.