You may take it as axiomatic that virtually all blood vessels form anastomoses to ensure the viability of the tissues of the body. Only so-called end arteries lack connections with other arteries, an accident of nature that poses serious threats to structures dependent for their survival on unimpeded flow through such vessel. In chapter 13,I referred at length to the collateral circulation of the head and neck, regions whose principal supply lines are the carotid and subclavian systems. We must now expand the discussion and consider the collateral circulation of other parts of the body.
Unable to display preview. Download preview PDF.