Which of the following best describes ligaments?

Ligaments are a vital component of the musculoskeletal system, specifically serving to connect bones to other bones at joints. This connection helps maintain proper joint stability and function during movement, ensuring that the skeletal system operates effectively throughout various activities.

Understanding the role of ligaments is essential for recognizing how they contribute to overall movement and support, especially in activities that involve stress on the joints. The other options pertain to different structures or functions within the body; for example, muscles are attached to bones by tendons, and ligaments do not have a direct role in the urinary system or in regulating blood circulation. Thus, recognizing that ligaments specifically connect bones to form stable joints is crucial in anatomy and physiology, particularly concerning movement and injury prevention.