Pectineus is a muscle found in the hip region. Synonyms for pectineus include pectineal muscle and musculus pectineus. The muscle is part of the adductor muscle group, along with the adductor brevis, magnus, and longus muscles. The pectineus muscle originates from the anterior superior ramus of the pubis and inserts into the pectineal line of the femur. It is responsible for flexing and adducting the hip joint. The pectineus muscle is typically used in exercises such as lunges, squats, and leg presses. Knowing the various synonyms for pectineus can help healthcare professionals and fitness enthusiasts better understand its functions in the body.