Psoas minor muscle
Insertion: iliopubic eminence and pectineal line.
Action: contributes to stabilization of the pelvis and hip joint, aids in flexion of the trunk.
Innervation: muscular branches of the lumbar plexus, arising from the anterior ramus of the spinal nerve L1.
Blood supply: lumbar arteries, lumbar branch of the iliolumbar artery.