psoas major muscle


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Related to psoas major muscle: Iliacus muscle, Quadratus lumborum muscle, Psoas minor muscle, Obturator internus muscle, Adductor magnus muscle

pso·as ma·jor mus·cle

(sō'as mā'jŏr mŭs'ĕl)
Groin muscle; origin, bodies of vertebrae and intervertebral discs from twelfth thoracic to fifth lumbar, and transverse processes of lumbar vertebrae; insertion, forms common insertion with iliacus muscle into lesser trochanter of femur; action, primary flexor of hip joint; nerve supply, lumbar plexus (ventral rami of first, second, and usually third lumbar spinal nerves).
Synonym(s): greater psoas muscle, musculus psoas major.

psoas major muscle

Thigh muscle. Origin: bodies of vertebrae T12-L1. Insertion: lesser trochanter of femur. Nerve: lumbar L1-L3. Action: flexes thigh.
See also: muscle
References in periodicals archive ?
Sitting through the day will cause the psoas major muscle to shorten so that we stay biomechanically balanced for a seated posture.
You will find the psoas major muscle half way between the anterior superior iliac spine and the navel.
However, they found no differences between the two breed types in the Psoas major muscles which is in agreement with this study.