What is the primary function of a tendon in the human body?

Tendons play a crucial role in connecting muscle to bone, which is their primary function. When a muscle contracts, it pulls on the tendon, which then transmits this force to the bone, leading to movement at the joint. This relationship is essential for facilitating movement and providing stability in the musculoskeletal system. Tendons are made of strong connective tissue that can withstand tension, making them highly effective in their supportive role in locomotion and posture. Understanding how tendons function helps to appreciate their importance in physical activity and rehabilitation processes, particularly in restoring mobility after injury.

The other options reflect different types of connective structures in the body. For example, ligaments connect bone to bone and help stabilize joints, while the connection between muscles involves different structures, such as fascia. The role of the skin is entirely separate from the functions of tendons, as it serves as a protective barrier for the body. Each of these structures contributes to the body's overall movement and stability, but only tendons have the specific role of linking muscle to bone.