from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a notch or indent
from The Century Dictionary and Cyclopedia
- n. An incisure; a fissure; a notch.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (anatomy) a notch or small hollow
The right margin of the esophagus is continuous with the lesser curvature of the stomach, while the left margin joins the greater curvature at an acute angle, termed the incisura cardiaca.
-- _Pedes antici_ robusti, inæquales; _pedum paria secundum, tertium et quartum_ longa, subcompressa; _par quintum_ exiguum, simplicissimum, rudimentarium, in incisura articuli basalis paris quarti insertum.
The Radial Notch (incisura radialis; lesser sigmoid cavity).
The Semilunar Notch (incisura semilunaris; greater sigmoid cavity).
The anterior descending branch passes at first behind the pulmonary artery and then comes forward between that vessel and the left auricula to reach the anterior longitudinal sulcus, along which it descends to the incisura apicis cordis; it gives branches to both ventricles.
To the left of the cardiac orifice is the incisura cardiaca: the projection of this notch into the cavity of the stomach increases as the organ distends, and has been supposed to act as a valve preventing regurgitation into the esophagus.
A plane passing through the incisura angularis on the lesser curvature and the left limit of the opposed dilatation on the greater curvature divides the stomach into a left portion or body and a right or pyloric portion.
In the pyloric portion are seen: (a) the elevation corresponding to the incisura angularis, and (b) the circular projection from the duodenopyloric constriction which forms the pyloric valve; the separation of the pyloric antrum from the rest of the pyloric part is scarcely indicated.
Directly opposite the incisura angularis of the lesser curvature the greater curvature presents a dilatation, which is the left extremity of the pyloric part; this dilatation is limited on the right by a slight groove, the sulcus intermedius, which is about 2.5 cm, from the duodenopyloric constriction.
Starting from the cardiac orifice at the incisura cardiaca, it forms an arch backward, upward, and to the left; the highest point of the convexity is on a level with the sixth left costal cartilage.
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