Psoas minor muscle
| Psoas minor muscle | |
|---|---|
| File:Musculus psoas minor.png
Muscles of the iliac and anterior femoral regions. (Psoas minor visible near top right.)
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| Details | |
| Latin | Musculus psoas minor |
| Origin | Lateral surface bodies of T12 and L1 vertebrae and intervening intervertebral disc |
| Insertion | Pectineal line and iliopubic eminence |
| Anterior ramus of nerve L1 | |
| Actions | Weak trunk flexor |
| Antagonist | Gluteus maximus |
| Identifiers | |
| MeSH | A02.633.567.825 |
| Dorlands /Elsevier |
m_22/12550283 |
| TA | Lua error in Module:Wikidata at line 744: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of muscle
[[[d:Lua error in Module:Wikidata at line 863: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]]
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The psoas minor is a long, slender skeletal muscle which, when present, is located anterior to the psoas major muscle.[1][2]
Structure
Psoas minor originates from the vertical fascicles inserted on the last thoracic and first lumbar vertebrae. From there, it passes down onto the medial border of the psoas major, and is inserted to the innominate line and the iliopectineal eminence. Additionally, it attaches to and stretches the deep surface of the iliac fascia and, occasionally, its lowermost fibers reach the inguinal ligament.[3] Variations occur, however, and the insertion on the iliopubic eminence sometimes radiates into the iliopectineal arch.[4]
Function
The psoas minor is a weak flexor of the lumbar vertebral column.
Additional images
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Right hip bone. Internal surface.
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Right femur. Posterior surface.
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Psoas minor muscle
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Slide9pp.JPG
Psoas minor muscle
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Slide6ppp.JPG
Psoas minor muscle
Notes
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