What muscle pulls the leg so that it can cross oer the other leg while sitting?

The primary muscle responsible for crossing the leg over the other while sitting is the sartorius muscle. This long, thin muscle runs from the hip to the knee and allows for hip flexion, abduction, and external rotation. Additionally, the iliopsoas and adductor muscles also assist in this movement by facilitating hip flexion and stabilization. Together, these muscles enable the leg to cross over smoothly.