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Psoas minor
Other Terms:
Psoas minor muscle,
Musculus psoas minor,
Muscle petit psoas
Muscle parts
None
Latin name
Musculus psoas minor
Latin muscle parts
None
Group
Abdominal wall – subvertebral muscle
Etymology
The English name for this muscle is the lesser muscle of the loin region. The word psoas comes from the Greek psoa meaning the “loin region.” The term minor comes from the Greek meion meaning “lesser.” As is typical in anatomical terminology, this comparative reference clues you into the fact that this is a smaller version of a similar placed larger muscle.
Origin
Lateral aspect of vertebral body of 12th thoracic and 1st lumbar vertebrae
Insertion
Pectineal line of pubis
Action
Assists with flexion of the lumbar vertebral column
Nerve supply
Small branch from the initial part of the lumbar ventral ramus(L1)
Blood supply
Lumbar arteries, lumbar branch of the iliolumbar artery.
Latin
Musculus psoas minor
French
Muscle petit psoas
