Assertion: common iliac artery's branch | /r/CapableOf | contribute to psoas
Facets:
value: via a small spinal branch
type: MANNER
Source sentences:
text: The lumbar branch contributes to the supply of the posterior abdominal wall, psoas and quadratus lumborum muscles, and cauda equina, via a small spinal branch that passes through the intervertebral foramen between L5 and SI (sacroiliac).