psoas major muscle


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

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 ?
Muscle fiber characteristics in the psoas major muscle
05), whereas the psoas major muscle cross-sectional area was increased by the TCMF added to the diet (p< 0.
Expression level of isoforms of the myosin heavy chain gene and the key genes in the regulation pathways of muscle fibers in the psoas major muscle
You will find the psoas major muscle half way between the anterior superior iliac spine and the navel.
Check the associated graphic for the position of the psoas major muscle and the iliacus muscle.
a-Right superior testicular artery, b- Right inferior testicular artery, c- Abdominal aorta, d- Bifurcation of abdominal aorta, e- Inferior vena cava, f- Right psoas major muscle , g- Right ureter and h-Right common iliac artery
Psoas accessorius muscle was originating from the deep surface of left Psoas minor tendon to spread out as fleshy mass on anterior surface of Psoas major muscle (Fig.
2010) (1), Psoas accessorius continued on the superficial surface of the Psoas major muscle right upto its insertion.
There were no significant changes in the psoas major muscle recruitment between resting and exercise leading the authors to conclude that the psoas major was not significantly recruited during trunk extension exercises.
Myofascial pain from or mysofasciopathy of the psoas major muscle will often present as anterior hip and/or lower back pain.
They ascend deep to the psoas major muscle anterior to the medial portions of the lumbar transverse processes to join with the subcostal veins, which drain into the azygos vein on the right and the hemi-azygos vein on the left, respectively.
However, they found no differences between the two breed types in the Psoas major muscles which is in agreement with this study.