lumbar iliocostal muscle n.
A muscle with its origin from the erector muscle of the spine, with insertion to the lower six ribs, with nerve supply from the branches of the thoracic and lumbar nerves, and whose action extends, abducts, and rotates the lumbar vertebrae.
lumbarization lum·bar·i·za·tion (lŭm’bər-ĭ-zā’shən) n. Sacral development of the fifth lumbar vertebra.
- Lumbar nerve
lumbar nerve n. Any of five nerves on either side that emerge from the lumbar portion of the spinal cord.
- Lumbar pack
noun a large waist pack or pouch for carrying personal articles, having a wide waist strap designed to equalize some of the weight that falls on the lower back
noun, Anatomy. 1. a network of nerves originating in the spinal nerves of the midback region and innervating the pelvic area, the front of the legs, and part of the feet. lumbar plexus n.