Final answer:
Circumduction is the movement of a body region in a circular manner, involving flexion, adduction, extension, and abduction. It occurs at biaxial condyloid and saddle joints.
Step-by-step explanation:
Circumduction is the movement of a body region in a circular manner, in which one end of the body region being moved stays relatively stationary while the other end describes a circle. It involves the sequential combination of flexion, adduction, extension, and abduction at a joint. This type of motion is found at biaxial condyloid and saddle joints.