Final answer:
The primary movers for hip flexion are the iliacus and psoas major muscles, which form the iliopsoas group, with contribution from the tensor fascia latae and the rectus femoris.
Step-by-step explanation:
The prime movers for hip flexion, commonly known as the hip flexors, include the iliacus and psoas major muscles, which together form the iliopsoas group. The iliopsoas is the major muscle group responsible for flexing the thigh at the hip. Additionally, the tensor fascia latae acts as a synergist to these muscles, aiding in the flexion and stabilization of the hip joint. The rectus femoris, part of the quadriceps group, also plays a role in hip flexion. These muscles originate on the pelvic girdle and insert into the femur, enabling the flexion of the hip joint necessary for a range of activities including walking, running, and climbing.