Psoas major
Psoas Major
The Psoas Major (/ˈsoʊ.æs/ or /ˈsoʊ.əs/; from Greek: ψόας - psóās) is a long fusiform muscle located on the side of the lumbar region of the vertebral column and brim of the lesser pelvis. It joins the iliacus muscle to form the iliopsoas.
Etymology
The term "Psoas" derives from the Greek word "ψόας" (psóās), which means "of the loins". The term "Major" is a Latin word that means "greater", used to distinguish this muscle from the Psoas minor, a smaller muscle that lies beneath the Psoas Major.
Function
The Psoas Major is a key muscle in the body, responsible for flexing the hip joint and lifting the upper leg towards the body. It also plays a crucial role in maintaining good posture.
Related Terms
- Iliopsoas: The muscle group formed by the Psoas Major and the Iliacus muscle.
- Psoas minor: A smaller muscle that lies beneath the Psoas Major.
- Lumbar vertebrae: The vertebrae in the lower back where the Psoas Major is located.
- Hip flexors: A group of muscles, including the Psoas Major, that act to flex the thigh bone towards the body.
See Also
External links
- Medical encyclopedia article on Psoas major
- Wikipedia's article - Psoas major
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