The brain comprises only 2% of total body weight; however, under normal conditions, it receives 15–20% of the cardiac output and accounts for 20% of total body oxygen consumption. Because energy reserves within the brain are negligible, adequate blood flow is essential for the provision of a continuous supply of energy-producing substrates and for the removal of the byproducts of cellular metab...

environmental pollutions and deterioration of spawning grounds have threatened the caspian lamprey. these problems have led to the need for special protection of the species in many localities, nevertheless, there is surprisingly few information about the physiology of caspian lamprey. thus, the present study aimed to evaluate the correlations between blood serum biochemical parameters and gona...

Regional myocardial blood flow can now be measured noninvasively in units of milliliters blood per minute per gram myocardium. These noninvasive measurements are not confined to a specific imaging modality but are available with MRI, CT, and PET, although, thus far, most investigations of the coronary circulation in humans have employed PET flow measurements. Flow estimates with these different...