Muscles produce movement by crossing which anatomical structures?

Muscles produce movement by crossing joints. Joints are where two or more bones meet, and they allow for various types of movement based on the structure of the joint. When a muscle contracts, it pulls on the bones that form the joint, leading to movement. The way in which muscles attach to bones, usually via tendons, allows them to facilitate motion at these joints.

Understanding joints is crucial in the context of movement, as different types of joints (such as hinge joints or ball-and-socket joints) allow for specific ranges and types of motion. This anatomical relationship is fundamental in fields like kinesiology, physical therapy, and fitness training, emphasizing the importance of joints in the biomechanics of movement.