释义 |
psoas minor muscle
pso·as mi·nor mus·cle (sō'as mī'nŏr mŭs'ĕl) An inconstant muscle, absent in about 40%; origin, bodies of twelfth thoracic and first lumbar vertebrae and disc between them; insertion, iliopubic eminence through iliopectineal arch (iliac fascia); action, assists in flexion of lumbar spine; nerve supply, lumbar plexus. Synonym(s): musculus psoas minor, smaller psoas muscle. |