Microcirculation refers to the circulation of blood in the microvessels of the microvasculature that is present within organ tissues. These microvessels include capillaries, arterioles, metarterioles and venules. In addition to these blood vessels, microcirculation is also enabled by the action of lymphatic capillaries and collecting ducts. The delivery of oxygen and nutrients, and the removal of carbon dioxide are possible due to microcirculation. It also regulates tissue perfusion and blood flow thus affecting blood pressure and responses to inflammation. Microcirculation has the three chief components- capillary, pre-capillary and post-capillary. This book discusses the fundamental as well as modern concepts of microcirculation. It consists of contributions made by international experts. For all readers who are interested in the study of microcirculation, the case studies included in this book will serve as an excellent guide to develop a comprehensive understanding.