Manipulated variable is usually a measure, a variable that you can measure. For example, if you can measure the voltage in the experimental setup then you can manipulate it, like using it to power a device. Constant variable, i think this is not very correct, a mathematician's opinion might be needed.
A synovial joint, also known as diarthrosis, is the most common and most movable type of joint in the body of a mammal. As with most other joints, synovial joints achieve movement at the point of contact of the articulating bones.Structural and functional differences distinguish synovial joints from cartilaginous joints (synchondroses and symphyses) and fibrous joints (sutures, gomphoses, and syndesmoses).s with most other joints, synovial joints achieve movement at the point of contact of the articulating bones. Structural and functional differences distinguish synovial joints from cartilaginous joints (synchondroses and symphyses) and fibrous joints (sutures, gomphoses, and syndesmoses).
Most of the joints in the human body are one of the six types of synovial joint: ball and socket, plane, hunge, pivot, condyloid or saddle. The other type of joint is the fibrous joint, where dense (fibrous) connective tissue connects the bones. The three types of fibrous joints are suture, syndesmosis and gomphosis. Suture and gomphosis joints are completely immobile and syndesmosis joints have very little movement.