An Approach To Demonstrate The Foramen Bursa Omenti Majoris And The Guarding Peritoneal Folds And The Recesses Of Omental Bursa

Background: Development of high-resolution computed tomographic imaging has substantially improved the radiologic examination of the omental bursa or lesser sac. However, dissection procedure to demonstrate the omental bursa and it two recesses in cadaver did not receive adequate attention in past decades. This was a cross-Methods: sectional, observational study on 20 cadavers. Relatively disease-free fresh adult cadavers of both sexes were selected randomly. Omental bursa was exposed through transgastric approach. Photographs taken after proper exposure. Results: In every dissection, omental bursa, superior and inferior recesses, foramen bursa omenti majoris, right and left gastropancreatic folds were clearly understood. In our study, an effort was made to establish a cadavericConclusion: dissection procedure to delineate omental bursa which may add to existing knowledge in medical education technology as well as help the surgoens particularly who are performing minimally invasive surgery (MIS)

Phylogeny of metabolic networks: A spectral graph theoretical approach.

Many methods have been developed for finding the commonalities between different organisms in order to study their phylogeny. The structure of metabolic networks also reveals valuable insights into metabolic capacity of species as well as into the habitats where they have evolved. We constructed metabolic networks of 79 fully sequenced organisms and compared their architectures. We used spectral density of normalized Laplacian matrix for comparing the structure of networks. The eigenvalues of this matrix reflect not only the global architecture of a network but also the local topologies that are produced by different graph evolutionary processes like motif duplication or joining. A divergence measure on spectral densities is used to quantify the distances between various metabolic networks, and a split network is constructed to analyse the phylogeny from these distances. In our analysis, we focused on the species that belong to different classes, but appear more related to each other in the phylogeny. We tried to explore whether they have evolved under similar environmental conditions or have similar life histories. With this focus, we have obtained interesting insights into the phylogenetic commonality between different organisms.