It is the sum of the grades of tenderness (0 = not tender, 1 = tender, 2 = tender and causes wince, and 3 = tender, causes wince and effort to withdraw) elicited by applying firm pressure over the joint margin of articular joints (shoulders, elbow, wrists, hips).t is the sum of the grades of tenderness (0 = not tender, 1 = tender, 2 = tender and causes wince, and 3 = tender, causes wince and effort to withdraw) elicited by applying firm pressure over the joint margin of articular joints (shoulders, elbow, wrists, hips).
ecosystem - a system formed by the interaction of a community of organisms with their physical environment. system, scheme - a group of independent but interrelated elements comprising a unified whole; a vast system of production and distribution and consumption keep the country going.
Ecosystem(s) The complex system of plant, animal, fungal, and microorganism communities and their associated non-living environment interacting as an ecological unit. Ecosystems have no fixed boundaries; instead their parameters are set to the scientific, management, or policy question being examined. Depending upon the purpose of analysis, a single lake, a watershed, or an entire region could be considered an ecosystem.