ilioinguinal nerve

Origin

• ventral ramus of L1
• the ilioinguinal nerve arises together with the iliohypogastric nerve from the ventral ramus of L1

Innervation

• skin of the suprapubic & inguinal regions (upper medial thigh, mons pubis, scrotum or labia majora)

Course

• it enters the abdomen posterior to the medial arcuate ligaments & passes inferolaterally, anterior to the quadratus lumborum muscle, penetrates the transversus abdominis muscle near the anterior superior iliac spine & passes through the internal oblique & external oblique muscles to supply the skin of the suprapubic & inguinal regions

More general terms

• peripheral nerve

Additional terms

• hypogastric nerve