The lumbar plexus.
The lumbar plexus supplies the abdominal wall, external genitals, and part of the lower limbs. Arising from this plexus are the ilioinguinal, femoral, and obturator nerves.
abdominal wall
abdominal wall
mesenteric
cervical plexus
Spinal chords
Ilioinguinal nerve
Linea Alba
Yes
An abdominal wall is the layer of muscles which surrounds the abdominal cavity and contains the abdominal organs.
A plexus (from the Latin plectere,meaning "braid") is an interwoven network of spinal nerves. There are four major plexuses on each side of the body: 1) the cervical plexus innervates the muscles of the neck, the skin of the neck, the back of the head, and the diaphragm muscle; 2) the brachialplexus innervates the shoulder and upper limb; 3) the lumbar plexus innervates the muscles and skin of the abdominal wall; and 4) the sacral plexus innervates the buttocks and lower limbs. The nerves then divide into smaller branches.
The peritoneum is the serous membrane that forms the lining of the abdominal cavity. It covers most of the intra-abdominal organs.The peritoneum supports the abdominal organs and serves as a conduit for their blood vessels, lymph vessels, and nerves.