Direct Tension Recording From Smooth Muscle of Resistance Vessels From Various Organs

摘要: Extensive evidence demonstrating the functional individualitv of different vascular beds has been mustered by Green and Kepchar.1 Teleologically, this individuality is appropriate to meet specialized demands placed on circulation in tissues under various physiologic conditions. Mechanistically, may reflect differences one or more following parameters: (1) structure, (2) neurogenic control, (3) smooth muscle responsiveness. The current study was undertaken evaluate characterize possible among preparations obtained from resistance vessels tissues. Small were used instead large conduit arteries because pattern flow distribution through organs determined primarily degree contraction small vessels. 200 300 /~ diameter. Studies, such as those Haddy,2 which pressures are recorded at several sites along axis tree, have demonstrated that size afford significant flow. Whether not they called arterioles then a matter semantics related property. Since isolated used, observed would intrinsic characteristics types muscle; persisted even after muscles common environment Krebs solution. Smooth mesentery, kidney, lung brain each evidenced consistent indi-