fissure

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Related to umbilical fissure: Ligamentum teres, Ligamentum venosum, umbilical fistula

fissure

1. Anatomy a narrow split or groove that divides an organ such as the brain, lung, or liver into lobes
2. a small unnatural crack in the skin or mucous membrane, as between the toes or at the anus
3. a minute crack in the surface of a tooth, caused by imperfect joining of enamel during development

fissure

[′fish·ər]
(geology)
A high, narrow cave passageway.
An extensive crack in a rock.
(metallurgy)
A small cracklike discontinuity with a slight opening or displacement of the fracture surfaces.
References in periodicals archive ?
During liver dissections, the Porta Hepatis, which is known as the portal plate, hilar plaque, lower hepatic hilum or portal channel, took a great importance; it is a parenchymal channel located in the middle third of the visceral surface, arranged transversely, is limited by the right portal fissure and the umbilical portal fissure, is "L" shaped to the left, it has two parts: the transverse part and the anterior or umbilical part, the latter portion is located on the lower border of the anterior portion of the umbilical fissure. This channel is completely covered by peritoneum, which gives it an aspect of "peritoneal thickening" (Fig.
The pink arrows point to the umbilical fissure, the oranges point to the main fissure, and the green arrows to the right fissure.
2) "The umbilical fissure separates segment III from segment VI within the left anterior sector and contains a main branch of the left hepatic vein (the umbilical fissure vein).