What is the primary function of ligaments in the body?

The primary function of ligaments is to connect bone to bone. Ligaments are tough, fibrous connective tissues that provide stability to joints by holding the bones together, ensuring that they remain in proper alignment and function during movement. This connection is crucial for maintaining the structural integrity of the skeletal system, allowing for a range of motion while preventing excessive movement that could lead to injuries.

The other roles, while important in other contexts, do not pertain to ligaments. For instance, muscles are connected to bones through tendons, and while ligaments may play a role in supporting organs indirectly (by stabilizing the skeletal structure), their main purpose is to link bones. Additionally, facilitating movement is primarily the role of muscles, not ligaments, which instead restrict excessive motion.