Iliopsoas Muscle

The iliopsoas muscle is frequently regarded as a single muscle, because it is a blending of two muscles, the psoas major and the iliacus. The psoas major is a powerful flexor muscle of the thigh at the hip joint. If both psoas major muscles are fixed from below, they act as important flexors of the trunk on the hip, as in sitting up from a lying-down position. The psoas minor is a weak flexor of the trunk and the lumbar spinal column. It is supplied by a branch of the first lumbar nerve. The...

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Anatomy Terms

Adductor Brevis Muscle
Adductor Longus Muscle
Adductor Magnus Muscle
Biceps Femoris Muscle (Long Head)
Gluteus Medius Muscle
Gluteus Minimus Muscle
Gracilis Muscle
Iliacus Muscle
Iliopsoas Muscle
Iliotibial Tract
Inferior Gemellus Muscle
Pectineus Muscle
Piriformis Muscle
Rectus Femoris Muscle
Sartorius Muscle
Semimembranosus Muscle
Semitendinosus Muscle
Superior Gemellus Muscle
Vastus Intermedius Muscle
Vastus Lateralis Muscle

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Full Iliopsoas Muscle Description

[Continued from above] . . . iliacus muscle works with the psoas major as a powerful flexor of the thigh at the hip joint. It joins the psoas in a number of other actions as the iliopsoas.