What is NOT a primary function of ligaments?

Ligaments are robust connective tissues that serve several key roles in the body, one of which involves connecting bones to other bones at joints. This connection contributes to the stability of the joints, allowing them to withstand various stresses and movements. Additionally, ligaments help to limit the range of movement at joints, preventing excessive motion that could lead to injuries.

The primary functions of ligaments focus on joint stability and support, rather than directly influencing muscle actions. Muscle contractions are primarily supported by tendons, which connect muscles to bones, allowing for movement. Therefore, the function most unrelated to ligaments among the choices listed is the support of muscle contractions. Ligaments do not play a role in facilitating muscle movement; instead, they work alongside other structures to maintain joint integrity and support overall joint function.