lumbar part of diaphragm

lum·bar part of di·a·phragm

[TA] the portion of the diaphragm that arises from the upper lumbar vertebrae and from the medial and lateral arcuate ligaments. See: right crus of diaphragm, left crus of diaphragm, lateral arcuate ligament, medial arcuate ligament. Synonym(s): pars lumbalis diaphragmatis [TA], vertebral part of diaphragm