xDSL - Computer Definition. Referring to any of a group of broadband digital access technologies operating over embedded unshielded twisted pair (UTP) telco local loops. xDSL technologies employ sophisticated compression algorithms and multiplexing techniques to derive performance that often exceeds 1 Mbps over a voice grade local loop. Most DSL technologies support simultaneous voice and high speed Internet access, and a number support video, as well.
Osseous structures means bony structures and in thorax it includes ribs,vertebra, clavicle. It is normal in your case. There is no abnormality in bones. There is some problem in perfusion study and in your case it is due to ischemic(decreased blood supply to part of heart)insult.
A homologous structures are structures that share an evolutionary  ancestry. An example of homologous structures would be the bones in  the arms of a human, the wings of a b â¦ at, and the legs of a dog.hese structures may serve the same or different functions. For example, the wing of a bird and the arm of a human serve very different functions, but are considered homologous structures because of the evolutionary relationship between birds and humans.